CSEC BIOLOGY · EXAM PREPARATION · LESSON E1

Paper 1: Multiple-Choice Strategy

How Paper 01 is built, how the 60 items spread across the syllabus, techniques for tricky item types, and a timed 60-item mock exam.

Papers 1, 2 and 3Paper 01≈ 30 min
Before you start

By the end of this lesson you can…

1WatchExplainer video 2ReadKey notes & exam tips 3PractisePaper 1 style 4Mock exam60 items, timed
Step 1 · Watch

Explainer video

6 narrated scenes. Press play, listen and read along — the points appear as they are explained. Use ‹ Prev / Next › or the scene bar to jump to any scene.

LESSON E1 · EXPLAINER

Paper 1: Multiple-Choice Strategy

60 questions, 75 minutes, no marks lost for wrong answers. Here’s how to collect every mark you know.

Narration uses your device’s built-in voice. No sound? Switch to “Captions only” — the captions advance on their own.

Step 2 · Read

Key notes

Copy these into your notebook in your own words — that is how they stick.

Format

60 items, 4 options, 1 h 15 min, 30% of grade. Score = number correct (no penalty for wrong answers).

Spread

About 11 items on Section A, 38 on Section B, 11 on Section C, in syllabus order.

Method

Read stem → predict → eliminate → choose BEST → shade carefully.

NOT items

Three options are true — find the false one.

I/II/III items

Decide true/false for each statement first, then find the matching option.

Timing

≈ 1 minute per item first pass; skip and return; check shading at the end.

Specimen paper

The CXC specimen Paper 01 (with answer key) is printed in the syllabus, pp. 87–103.

EXAM TIPS & COMMON MISTAKES

  • Never leave a blank — an educated guess has a 1-in-4 chance or better.
  • If two options mean the same thing, neither is likely to be the answer.
  • Absolute words (“always”, “never”, “all”) are often wrong in biology.
  • Change an answer only if you find a clear reason — first instincts are usually right.
Step 3 · Practise

Paper 1 practice — multiple choice

10 items modelled on real CSEC Paper 1 questions. Choose one answer for each, then check. Aim for 80% or better.

Adapted from CSEC Specimen Paper 01, Item 5

1. Which statement about a food chain is TRUE?

Answer: C. Producers trap light energy; it is then passed along the chain as chemical energy.
Adapted from CSEC Specimen Paper 01, Item 6

2. For which resource would plants NOT compete?

Answer: D. Plants make their own food, so they do not compete for it.
Adapted from CSEC Specimen Paper 01, Item 12

3. In photosynthesis, the oxygen released comes from

Answer: B. Water molecules are split; the oxygen is released.
Adapted from CSEC Specimen Paper 01, Item 17

4. Which organ involved in digestion produces NO digestive enzymes?

Answer: C. The liver makes bile, which has no enzymes.
Adapted from CSEC Specimen Paper 01, Item 27

5. In the kidney, most water is reabsorbed into the blood from the

Answer: B. Most water (about two-thirds) is reabsorbed in the proximal convoluted tubule.
Adapted from CSEC Specimen Paper 01, Item 34

6. Which is the correct pathway of a reflex action?

Answer: A. The stimulus is detected by a receptor; an effector produces the response.
Adapted from CSEC Specimen Paper 01, Items 57–58

7. Which BEST describes biological evolution?

Answer: B. Evolution is a change in the genetic make-up of a population over generations.
Adapted from CSEC Specimen Paper 01, Item 59

8. Which provide evidence for biological evolution? I Fossil record II DNA comparisons III Vestigial structures

Answer: D. All three are accepted lines of evidence.
EduTech exam-skills item

9. An item says “Which is NOT a function of the skeleton?”. Your first job is to

Answer: A. In NOT items, three options are true; the answer is the false one.
EduTech exam-skills item

10. You have 5 minutes left and 4 items unanswered. You should

Answer: A. There is no penalty for wrong answers.
Your progress

Lesson readiness

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Sources

Syllabus sources and past papers

Everything in this lesson is based on these parts of the CXC syllabus and papers.

Ready? Start the timed 60-item Paper 1 mock exam — it is scored by section and counts towards your Paper 1 readiness.