{"id":46157,"date":"2026-09-14T14:32:16","date_gmt":"2026-09-14T07:32:16","guid":{"rendered":"https:\/\/times.edu.vn\/?p=46157"},"modified":"2026-09-14T14:32:34","modified_gmt":"2026-09-14T07:32:34","slug":"ib-biology-command-terms","status":"publish","type":"post","link":"https:\/\/times.edu.vn\/en\/ib\/ib-biology-command-terms\/","title":{"rendered":"IB Biology command terms 2026: What they mean and how to respond correctly"},"content":{"rendered":"<p>IB Biology command terms are the instruction words used in exam questions to tell students exactly what type of response, reasoning, and level of detail an examiner expects. Terms such as state, identify, describe, explain, analyse, evaluate, outline, discuss, and compare each require a different approach, and misunderstanding them can lead to lost marks even when the biology itself is correct. The command term also helps students judge how much to write and how to structure each answer in relation to the mark allocation.<\/p>\n<p>This guide explains the most important IB Biology command terms and how to respond to each one effectively in exam conditions.<\/p>\n<h2>Why understanding command terms is essential for scoring high in IB Biology<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/times.edu.vn\/wp-content\/uploads\/2026\/09\/IB-Biology-command-terms.webp\" alt=\"IB Biology command terms\" width=\"1000\" height=\"667\" \/><\/p>\n<p>The <a href=\"https:\/\/times.edu.vn\/en\/ib\/the-ultimate-ib-diploma-program-ibdp-guide\/\">IB<\/a> marking scheme is not holistic. Examiners do not award marks for general biological knowledge scattered across a page. They award marks for specific, expected content that aligns directly with the command word used in the question.<\/p>\n<p>IBO command terms in Biology are grouped by objective level, moving from simple recall at Level 1 through to critical evaluation at Level 3. Each level demands a fundamentally different type of thinking and writing. A student who answers a &#8220;discuss&#8221; question with the brevity of a &#8220;state&#8221; question will lose marks every single time, regardless of how accurate the facts are.<\/p>\n<blockquote><p>Drawing on years of experience at <a href=\"https:\/\/times.edu.vn\/\">Times Edu<\/a> working with IB students across Asia, Europe, and the Middle East, one pattern stands out clearly: Students who invest time learning <a href=\"https:\/\/times.edu.vn\/en\/ib\/ib-biology\/\">IB Biology<\/a> question language before the exam outperform equally knowledgeable peers by a significant margin. Command terms are not a minor technical detail. They are the core logic of the entire IB assessment system.<\/p><\/blockquote>\n\n\t<button class='btn-dang-ky' onclick=\"openPopup('popup1')\">\n\t\t<span class='text-effect-1'>\n\t\t\t<svg\n\t\t\t\txmlns='http:\/\/www.w3.org\/2000\/svg'\n\t\t\t\tviewBox='0 0 64 64'\n\t\t\t\twidth='24'\n\t\t\t\theight='24'\n\t\t\t\taria-label='Calendar icon'\n\t\t\t>\n\t\t\t\t<rect width='64' height='64' rx='6' fill='#caa15a'\/>\n\t\t\t\t<rect x='10' y='14' width='44' height='40' rx='4'\n\t\t\t\t\tfill='none' stroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='10' y1='24' x2='54' y2='24'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='22' y1='6' x2='22' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t\t<line x1='42' y1='6' x2='42' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t<\/svg>\n\t\t\tBook a Trial Class\n\t\t<\/span>\n\t<\/button>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-biology-books\/\">IB Biology books<\/a> 2026: Complete guide for students and teachers<\/p>\n<h2>State and identify in IB Biology: How much detail is expected<\/h2>\n<p>&#8220;State&#8221; and &#8220;identify&#8221; are Level 1 command words in IB Biology <sup><a href=\"#tooltip-ref-1\" class=\"tooltip-link\" data-tooltip=\"https:\/\/ibo.org\/programmes\/diploma-programme\/curriculum\/sciences\/biology\/\">[1]<\/a><\/sup>. They require the minimum viable answer: A specific name, value, biological term, or brief factual statement with no accompanying explanation.<\/p>\n<p>When an examiner writes &#8220;state the products of the light-dependent reactions,&#8221; they want: ATP, NADPH, and oxygen. They do not want a paragraph explaining chemiosmosis. Adding unnecessary explanation wastes time and does not earn additional marks.<\/p>\n<p>The distinction between &#8220;state&#8221; and &#8220;identify&#8221; is subtle but worth noting. &#8220;State&#8221; typically asks you to produce a piece of information from memory. &#8220;Identify&#8221; often asks you to pull a specific piece of information from a graph, diagram, or data set provided in the question. In practice, both require brief, pointed answers.<\/p>\n<table>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">Command term<\/th>\n<th colspan=\"1\" rowspan=\"1\">Objective level<\/th>\n<th colspan=\"1\" rowspan=\"1\">What to write<\/th>\n<th colspan=\"1\" rowspan=\"1\">Mark range<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">State<\/td>\n<td colspan=\"1\" rowspan=\"1\">Level 1<\/td>\n<td colspan=\"1\" rowspan=\"1\">A specific name, value, or biological term<\/td>\n<td colspan=\"1\" rowspan=\"1\">1 mark<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Identify<\/td>\n<td colspan=\"1\" rowspan=\"1\">Level 1<\/td>\n<td colspan=\"1\" rowspan=\"1\">A named feature, trend, or value from data or a diagram<\/td>\n<td colspan=\"1\" rowspan=\"1\">1 mark<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Define<\/td>\n<td colspan=\"1\" rowspan=\"1\">Level 1<\/td>\n<td colspan=\"1\" rowspan=\"1\">The precise biological or mathematical meaning of a term<\/td>\n<td colspan=\"1\" rowspan=\"1\">1-2 marks<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">List<\/td>\n<td colspan=\"1\" rowspan=\"1\">Level 1<\/td>\n<td colspan=\"1\" rowspan=\"1\">A series of brief, unnested items with no elaboration<\/td>\n<td colspan=\"1\" rowspan=\"1\">1-2 marks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<blockquote><p>A common mistake we see at Times Edu is students writing two or three sentences when a question says &#8220;state.&#8221; This signals to the examiner that the student does not understand how the IB marking system works, and it costs time that could be spent on higher-mark questions.<\/p><\/blockquote>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-books\/\">IB books<\/a> 2026: The complete guide to study materials for the IB Diploma<\/p>\n<h2>Describe and explain in IB Biology: The key differences and how to answer each<\/h2>\n<p>This is the most consequential distinction in the entire IB Biology command terms system. More marks are lost on the &#8220;describe vs. Explain&#8221; divide than on any other point of confusion, including content errors.<\/p>\n<p><strong>Describe<\/strong> is <a href=\"https:\/\/times.edu.vn\/en\/a-level\/what-is-a-level\/\">a Level<\/a> 2 command term. It asks you to paint an accurate, sequential picture of what is happening in a biological process or structure. The examiner wants the &#8220;what&#8221; and the &#8220;how,&#8221; not the underlying cause.<\/p>\n<p>A correct response to &#8220;describe the process of translation&#8221; would walk through the steps: MRNA attaches to the ribosome, a tRNA bearing the complementary anticodon and its amino acid enters the A site, a peptide bond forms, the ribosome translocates, and the polypeptide chain elongates. No explanation of why ribosomes have two subunits is required.<\/p>\n<p><strong>Explain<\/strong> is a Level 3 command term. It demands that you link biological events to their underlying mechanisms, causes, or reasons. The keyword is &#8220;because.&#8221;<\/p>\n<p>A response to &#8220;explain why enzyme activity decreases above the optimum temperature&#8221; must include the mechanism: Heat causes increased vibration of the polypeptide chains, breaking hydrogen bonds and other non-covalent interactions that maintain the tertiary structure, altering the shape of the active site so substrates can no longer bind effectively. Simply saying &#8220;the enzyme denatures&#8221; is a describe-level answer and will not earn full marks for an explain question.<\/p>\n<p>One critical detail often overlooked is that explain questions always carry more marks than describe questions on the same topic. When students treat an explain prompt with describe-level depth, they typically earn one or two marks on a four-to-six mark question. The lost marks are not a content failure. They are a question-reading failure.<\/p>\n<p><strong>Practical writing rule for &#8220;explain&#8221; questions:<\/strong><\/p>\n<ul>\n<li>Identify the biological event or observation.<\/li>\n<li>Write &#8220;because&#8221; or &#8220;this is due to&#8221; and state the mechanism.<\/li>\n<li>Show the consequence of that mechanism for the organism or system.<\/li>\n<li>Repeat the chain for each mark point the question requires.<\/li>\n<\/ul>\n\n\t<button class='btn-dang-ky' onclick=\"openPopup('popup1')\">\n\t\t<span class='text-effect-1'>\n\t\t\t<svg\n\t\t\t\txmlns='http:\/\/www.w3.org\/2000\/svg'\n\t\t\t\tviewBox='0 0 64 64'\n\t\t\t\twidth='24'\n\t\t\t\theight='24'\n\t\t\t\taria-label='Calendar icon'\n\t\t\t>\n\t\t\t\t<rect width='64' height='64' rx='6' fill='#caa15a'\/>\n\t\t\t\t<rect x='10' y='14' width='44' height='40' rx='4'\n\t\t\t\t\tfill='none' stroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='10' y1='24' x2='54' y2='24'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='22' y1='6' x2='22' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t\t<line x1='42' y1='6' x2='42' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t<\/svg>\n\t\t\tBook a Trial Class\n\t\t<\/span>\n\t<\/button>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-biology-experimental-design\/\">IB Biology Experimental Design<\/a> : 6-Step Framework for IA Score 7<\/p>\n<h2>Analyse and evaluate in IB Biology: How to structure higher-order responses<\/h2>\n<p>&#8220;Analyse&#8221; and &#8220;evaluate&#8221; are both Level 3 command terms, and they appear frequently in IB Biology Paper 2 command words, particularly in data-based questions and extended response prompts.<\/p>\n<p><strong>Analyse<\/strong> asks you to break a data set, process, or biological situation into its component parts and examine how those parts relate to each other. When you see &#8220;analyse the data shown in Figure 1,&#8221; the examiner wants you to identify specific trends, note any anomalies, and link the data points to a biological explanation.<\/p>\n<p>A strong analysis does three things: It states what the data shows with specific reference to values or trends, it identifies any patterns or outliers, and it connects those observations to a biological mechanism or concept from the syllabus.<\/p>\n<p><strong>Evaluate<\/strong> goes one step further. It asks you to make a judgment about the quality, validity, or implications of a data set, experimental design, or biological claim. In our experience working with international students preparing for IB exams, evaluate questions are where the gap between a 5 and a 7 is most visible.<\/p>\n<p>A complete evaluation response includes:<\/p>\n<ul>\n<li>What the data or evidence successfully demonstrates.<\/li>\n<li>What limitations exist in the data, methodology, or sample.<\/li>\n<li>An overall judgment, clearly stated, about the strength or reliability of the evidence.<\/li>\n<\/ul>\n<blockquote><p>Students who only describe what the data shows in response to an evaluate question typically earn partial credit at best. The examiner is specifically looking for critical judgment, including an explicit statement of what the evidence does not prove or cannot account for.<\/p><\/blockquote>\n<table>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">Command term<\/th>\n<th colspan=\"1\" rowspan=\"1\">Objective level<\/th>\n<th colspan=\"1\" rowspan=\"1\">Core task<\/th>\n<th colspan=\"1\" rowspan=\"1\">Mark range<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Analyse<\/td>\n<td colspan=\"1\" rowspan=\"1\">Level 3<\/td>\n<td colspan=\"1\" rowspan=\"1\">Break down data or a process; identify relationships and patterns<\/td>\n<td colspan=\"1\" rowspan=\"1\">3-6 marks<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Evaluate<\/td>\n<td colspan=\"1\" rowspan=\"1\">Level 3<\/td>\n<td colspan=\"1\" rowspan=\"1\">Judge the validity, strength, or limitations of evidence or a claim<\/td>\n<td colspan=\"1\" rowspan=\"1\">3-6 marks<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Explain<\/td>\n<td colspan=\"1\" rowspan=\"1\">Level 3<\/td>\n<td colspan=\"1\" rowspan=\"1\">Account for why something happens using biological mechanisms<\/td>\n<td colspan=\"1\" rowspan=\"1\">3-8 marks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-biology-hl-data-based-answers\/\">IB Biology HL Data-Based Answers<\/a>: 5-Step Strategy for Paper 2 &amp; 3 Score 7<\/p>\n<h2>Outline, discuss and compare in IB Biology explained<\/h2>\n<p>These three command terms cause consistent confusion, largely because students treat them as interchangeable with &#8220;describe,&#8221; &#8220;explain,&#8221; or &#8220;list.&#8221; Each has a distinct purpose.<\/p>\n<p><strong>Outline<\/strong> is a Level 2 command term that sits between &#8220;state&#8221; and &#8220;describe&#8221; in terms of depth. It asks for a brief account of the essential features or key steps of a process, without the detailed mechanistic unpacking required by &#8220;describe.&#8221; Think of it as a structured summary: You cover the main milestones of a process, in order, without drilling into the biochemical detail at each step.<\/p>\n<p>For example, &#8220;outline the process of transcription&#8221; would require: DNA unwinds, RNA polymerase binds to the promoter, complementary RNA nucleotides are added in the 5&#8242; to 3&#8242; direction, and the pre-mRNA strand is released. An outline does not require a detailed account of every enzyme involved or the specific base-pairing rules for each nucleotide.<\/p>\n<p><strong>Discuss<\/strong> is a Level 3 command term that requires a balanced, multi-perspective response. It is common in ecology, genetics, bioethics, and evolution topics. A discussion must include arguments on more than one side of an issue, relevant evidence, and ideally a reasoned conclusion. Answering a discuss question with only one viewpoint, even a well-developed one, will not access the top mark band.<\/p>\n<p><strong>Compare and contrast<\/strong> is one of the most technically demanding IB Biology command terms because the mark scheme is structured to reward both similarities and differences equally. A common mistake we see is students writing a paragraph about the first item and a separate paragraph about the second item, leaving the examiner to make all the connections.<\/p>\n<p>The correct approach is comparative language throughout: &#8220;competitive inhibitors bind to the active site, whereas non-competitive inhibitors bind to the allosteric site.&#8221; Every sentence should contain a direct link between the two items being compared.<\/p>\n<p>When the prompt says &#8220;compare and contrast,&#8221; you must explicitly address both similarities and differences. Organizing your response under clear sub-headers for &#8220;Similarities&#8221; and &#8220;Differences&#8221; is a reliable way to ensure the examiner can award marks efficiently.<\/p>\n<table>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">Command term<\/th>\n<th colspan=\"1\" rowspan=\"1\">Depth required<\/th>\n<th colspan=\"1\" rowspan=\"1\">Common topics<\/th>\n<th colspan=\"1\" rowspan=\"1\">Key mistake to avoid<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Outline<\/td>\n<td colspan=\"1\" rowspan=\"1\">Medium: Key steps only<\/td>\n<td colspan=\"1\" rowspan=\"1\">Cellular processes, genetics mechanisms<\/td>\n<td colspan=\"1\" rowspan=\"1\">Writing too much detail; treat as a structured summary<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Discuss<\/td>\n<td colspan=\"1\" rowspan=\"1\">High: Multiple perspectives<\/td>\n<td colspan=\"1\" rowspan=\"1\">Ecology, bioethics, evolution<\/td>\n<td colspan=\"1\" rowspan=\"1\">Presenting only one viewpoint<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Compare<\/td>\n<td colspan=\"1\" rowspan=\"1\">High: Similarities required<\/td>\n<td colspan=\"1\" rowspan=\"1\">Cell types, enzyme inhibition, membranes<\/td>\n<td colspan=\"1\" rowspan=\"1\">Describing items separately without linking them<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Compare and contrast<\/td>\n<td colspan=\"1\" rowspan=\"1\">High: Both similarities and differences<\/td>\n<td colspan=\"1\" rowspan=\"1\">Mitosis vs meiosis, aerobic vs anaerobic<\/td>\n<td colspan=\"1\" rowspan=\"1\">Omitting either similarities or differences<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Distinguish<\/td>\n<td colspan=\"1\" rowspan=\"1\">Medium: Differences only<\/td>\n<td colspan=\"1\" rowspan=\"1\">Structures, terms, processes<\/td>\n<td colspan=\"1\" rowspan=\"1\">Writing separate definitions rather than direct comparisons<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\t<button class='btn-dang-ky' onclick=\"openPopup('popup1')\">\n\t\t<span class='text-effect-1'>\n\t\t\t<svg\n\t\t\t\txmlns='http:\/\/www.w3.org\/2000\/svg'\n\t\t\t\tviewBox='0 0 64 64'\n\t\t\t\twidth='24'\n\t\t\t\theight='24'\n\t\t\t\taria-label='Calendar icon'\n\t\t\t>\n\t\t\t\t<rect width='64' height='64' rx='6' fill='#caa15a'\/>\n\t\t\t\t<rect x='10' y='14' width='44' height='40' rx='4'\n\t\t\t\t\tfill='none' stroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='10' y1='24' x2='54' y2='24'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4'\/>\n\t\t\t\t<line x1='22' y1='6' x2='22' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t\t<line x1='42' y1='6' x2='42' y2='18'\n\t\t\t\t\tstroke='#ffffff' stroke-width='4' stroke-linecap='round'\/>\n\t\t\t<\/svg>\n\t\t\tBook a Trial Class\n\t\t<\/span>\n\t<\/button>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-biology-hl-revision\/\">IB Biology HL Revision<\/a> 2026: A High-Impact Plan to Boost Your Grade Fast<\/p>\n<h2>How command terms affect mark allocation in IB Biology papers<\/h2>\n<p>Mark allocation in IB Biology is directly tied to the command term used. The IBO does not assign four marks to a question and then expect a one-sentence answer. The number of marks available is a direct signal of how many distinct, correct points the examiner expects.<\/p>\n<p>A practical rule: For most Level 2 and Level 3 command terms, plan to write one substantive, correct point per mark available. For a four-mark explain question, that means four mechanistic links, not four sentences repeating the same idea.<\/p>\n<p>The relationship between command terms and marks also affects how you should allocate your time in Paper 2. State and identify questions should take under thirty seconds each. A six-mark evaluate question deserves five to eight minutes of careful, structured writing. Students who spend equal time on both types of questions systematically underperform on the high-value items.<\/p>\n<p>In our experience working with international students at Times Edu, one of the highest-impact interventions is teaching students to scan Paper 2 at the start of the exam, identify all high-mark command term questions, and plan those responses before writing a single word. This prevents the common trap of exhausting cognitive energy on low-mark recall questions and arriving at a six-mark evaluate question with three minutes left.<\/p>\n<p>The table below summarizes the expected output per command term level:<\/p>\n<table>\n<tbody>\n<tr>\n<th colspan=\"1\" rowspan=\"1\">Objective level<\/th>\n<th colspan=\"1\" rowspan=\"1\">Command terms<\/th>\n<th colspan=\"1\" rowspan=\"1\">Expected output per mark<\/th>\n<th colspan=\"1\" rowspan=\"1\">Time investment<\/th>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Level 1<\/td>\n<td colspan=\"1\" rowspan=\"1\">State, list, define, identify<\/td>\n<td colspan=\"1\" rowspan=\"1\">One specific fact or term<\/td>\n<td colspan=\"1\" rowspan=\"1\">Under 30 seconds per mark<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Level 2<\/td>\n<td colspan=\"1\" rowspan=\"1\">Describe, outline, distinguish<\/td>\n<td colspan=\"1\" rowspan=\"1\">One clear, accurate step or point<\/td>\n<td colspan=\"1\" rowspan=\"1\">45-60 seconds per mark<\/td>\n<\/tr>\n<tr>\n<td colspan=\"1\" rowspan=\"1\">Level 3<\/td>\n<td colspan=\"1\" rowspan=\"1\">Explain, analyse, evaluate, discuss, compare<\/td>\n<td colspan=\"1\" rowspan=\"1\">One mechanistic link, judgment, or perspective<\/td>\n<td colspan=\"1\" rowspan=\"1\">60-90 seconds per mark<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong style=\"color: #f00;\">&gt;&gt;&gt; Read more:<\/strong> <a class=\"xem-them-link\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-tutor\/\">IB Tutor<\/a> 2026: How to Choose the Right Tutor for Better Grades and Less Stress<\/p>\n<h2>Frequently asked questions<\/h2>\n<p><strong>What are the IB Biology command terms and why do they matter?<\/strong><\/p>\n<p>IB Biology command terms are the official words the IBO uses at the start of exam questions to specify the type of response required. They range from simple recall words like &#8220;state&#8221; and &#8220;list&#8221; to higher-order critical thinking words like &#8220;evaluate&#8221; and &#8220;discuss.&#8221; They matter because the IB marking scheme awards marks only for content that directly addresses the command term. An accurate but misaligned answer can score zero.<\/p>\n<p><strong>What is the difference between describe and explain in IB Biology?<\/strong><\/p>\n<p>&#8220;Describe&#8221; asks for a sequential, factual account of what happens in a process or structure. &#8220;Explain&#8221; requires you to identify the underlying biological mechanism or reason behind what happens. Every explain answer should include a causal link, typically expressed using &#8220;because&#8221; or &#8220;this causes.&#8221; The mark allocation for explain questions is consistently higher than for describe questions on equivalent topics.<\/p>\n<p><strong>What does evaluate mean in IB Biology and how should you structure your answer?<\/strong><\/p>\n<p>&#8220;Evaluate&#8221; asks you to make a reasoned judgment about the strength, validity, or limitations of a data set, experimental design, or biological claim. A strong evaluate response identifies what the evidence successfully shows, explicitly states its limitations or what it fails to account for, and closes with a clear overall judgment. Students who only describe the data without making a judgment will not access the top mark band.<\/p>\n<p><strong>What does outline mean in IB Biology and how does it differ from describe?<\/strong><\/p>\n<p>&#8220;Outline&#8221; requires a brief account of the key steps or essential features of a process, without the detailed mechanistic depth expected in a &#8220;describe&#8221; answer. Think of it as a macro-level summary: You name the key milestones in order, without explaining the biochemical detail at each stage. &#8220;Describe&#8221; requires more depth and a more complete account of what is happening at each step.<\/p>\n<p><strong>What does analyse mean in IB Biology exam questions?<\/strong><\/p>\n<p>&#8220;Analyse&#8221; asks you to examine a data set, graph, or biological situation by breaking it into its component parts and identifying relationships, trends, or patterns. A complete analysis names specific values or trends from the data, identifies any anomalies, and links the observations to a relevant biological concept or mechanism from the syllabus.<\/p>\n<p><strong>How do command terms affect how much you need to write in IB Biology?<\/strong><\/p>\n<p>The number of marks attached to a question tells you how many distinct correct points the examiner expects. As a general rule, each mark requires one substantive, accurate point. The command term tells you the depth of each point. A one-mark &#8220;state&#8221; answer needs one word or phrase. A six-mark &#8220;evaluate&#8221; answer needs six distinct analytical or evaluative points, each grounded in biological reasoning.<\/p>\n<p><strong>Which IB Biology command terms appear most frequently in Paper 2?<\/strong><\/p>\n<p>Based on past paper analysis, the most frequently appearing command terms in IB Biology Paper 2 are &#8220;describe,&#8221; &#8220;explain,&#8221; &#8220;evaluate,&#8221; &#8220;outline,&#8221; and &#8220;compare.&#8221; &#8220;Explain&#8221; and &#8220;evaluate&#8221; carry the highest mark allocations and are the most consequential for final scores. Students who master these two command terms specifically will see the greatest improvement in their Paper 2 performance.<\/p>\n<p><strong>Conclusion<\/strong><\/p>\n<p>At Times Edu, our 1-on-1 IB Biology tutoring sessions are built around exactly this kind of exam literacy. We do not simply review content with students. We train them to read questions the way examiners write them, to plan responses that target the marking rubric directly, and to allocate their time in Paper 2 to maximize total marks. If your student is preparing for IB Biology exams and wants a personalized academic roadmap that covers both content mastery and exam strategy, a consultation with our specialist team is the logical next step.<\/p>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-right kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;right&quot;,&quot;id&quot;:&quot;46157&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0110\u00e1nh gi\u00e1 b\u00e0i vi\u1ebft&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;IB Biology command terms 2026: What they mean and how to respond correctly&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">\u0110\u00e1nh gi\u00e1 b\u00e0i vi\u1ebft<\/span>\n    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>IB Biology command terms are the instruction words used in exam questions to tell students exactly what type of response, reasoning, and level of detail an examiner expects. Terms such as state, identify, describe, explain, analyse, evaluate, outline, discuss, and compare each require a different approach, and misunderstanding them can lead to lost marks even &#8230; <a title=\"IB Biology command terms 2026: What they mean and how to respond correctly\" class=\"read-more\" href=\"https:\/\/times.edu.vn\/en\/ib\/ib-biology-command-terms\/\" aria-label=\"Read more about IB Biology command terms 2026: What they mean and how to respond correctly\">Read more<\/a><\/p>\n","protected":false},"author":12,"featured_media":46054,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","rank_math_title":"","rank_math_description":"","footnotes":""},"categories":[170],"tags":[],"class_list":["post-46157","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ib"],"_links":{"self":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts\/46157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/comments?post=46157"}],"version-history":[{"count":3,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts\/46157\/revisions"}],"predecessor-version":[{"id":46168,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/posts\/46157\/revisions\/46168"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/media\/46054"}],"wp:attachment":[{"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/media?parent=46157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/categories?post=46157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/times.edu.vn\/en\/wp-json\/wp\/v2\/tags?post=46157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}