Chapters and topics
- The Science of Biology 2 topics · 207 MCQs
- Biodiversity 1 topic · 117 MCQs
- The Cell 1 topic · 101 MCQs
- Cell Cycle 1 topic · 100 MCQs
- Tissues, Organs and Organ Systems 2 topics · 222 MCQs
- Biomolecules 2 topics · 207 MCQs
- Enzymes 1 topic · 100 MCQs
- Bioenergetics 1 topic · 100 MCQs
- Plant Physiology 2 topics · 204 MCQs
- Reproduction in Plants 1 topic · 102 MCQs
- Biostatistics 2 topics · 221 MCQs
Sample Biology MCQs
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Q1. “'If fertilizer X increases yield, then treated plants will produce more fruit.'” This step of the scientific method is:
- recognition of the problem
- deduction
- observation
- conclusion
Show the answer
Answer: B. deduction
The correct answer is “deduction”. This is the deduction step.
Q2. Outside a host cell, viruses:
- are not made of cells and cannot reproduce outside a host cell
- show no life activities and can even be crystallised
- have no cell structure — only nucleic acid inside a protein coat
- they are at the border of living and non-living
Show the answer
Answer: B. show no life activities and can even be crystallised
Show no life activities and can even be crystallised.
Q3. Cells without a true nucleus, such as bacteria, are called:
- Robert Hooke (1665)
- mitochondrion
- prokaryotic cells
- Matthias Schleiden
Show the answer
Answer: C. prokaryotic cells
The correct answer is “prokaryotic cells”. Prokaryotic cells.
Q4. A human body cell has 46 chromosomes. After mitosis, each daughter cell has:
- 46 chromosomes
- 23 chromosomes
- 92 chromosomes
- 48 chromosomes
Show the answer
Answer: A. 46 chromosomes
Mitosis produces two genetically identical diploid cells with the same chromosome number as the parent.
Q5. In the stomach, epithelial tissue:
- coordinates the contractions of the stomach
- lines the inside of the stomach and secretes mucus
- churns and mixes food by contracting
- holds the layers together and carries blood vessels
Show the answer
Answer: B. lines the inside of the stomach and secretes mucus
Epithelial tissue: lines the inside of the stomach and secretes mucus.
Q6. The complementary DNA strand for the sequence GATGGA is:
- GATGGA
- TCCATC
- CUACCU
- CTACCT
Show the answer
Answer: D. CTACCT
A pairs with T and G pairs with C: GATGGA → CTACCT.
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