National 5 Biology - Unit 1 End of Unit
Test Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What is the function of mRNA during protein synthesis?
✔✔To carry genetic information from the DNA to the ribosomes for protein synthesis
What are the building blocks of proteins?
✔✔Amino acids
What is genetic engineering?
✔✔The manipulation of an organism's DNA to achieve desired traits
How does recombinant DNA technology work?
✔✔It involves combining DNA from two different sources to create a new set of genetic
material
What is the function of tRNA in protein synthesis?
✔✔To bring amino acids to the ribosome during translation
1
,What is the process by which cells divide to form two identical cells?
✔✔Mitosis
What is the role of the enzyme helicase in DNA replication?
✔✔To unwind the DNA double helix
What is the main function of the cell membrane?
✔✔To control the movement of substances in and out of the cell
What structure in plant cells contains chlorophyll?
✔✔Chloroplasts
What is the role of ribosomes in the cell?
✔✔To synthesize proteins
Which organelle is responsible for producing ATP in animal cells?
✔✔Mitochondria
2
, What is the main difference between prokaryotic and eukaryotic cells?
✔✔Prokaryotic cells do not have a nucleus, whereas eukaryotic cells do
What is the function of the vacuole in plant cells?
✔✔To store water and maintain turgidity
What process occurs in the mitochondria of the cell?
✔✔Aerobic respiration
What is the main role of the nucleus in a cell?
✔✔To control the activities of the cell and store genetic material (DNA)
What is a gene?
✔✔A section of DNA that codes for a specific protein
How does active transport differ from passive transport?
✔✔Active transport requires energy, while passive transport does not
3
Test Questions and Answers | Latest
Version | 2025/2026 | Correct & Verified
What is the function of mRNA during protein synthesis?
✔✔To carry genetic information from the DNA to the ribosomes for protein synthesis
What are the building blocks of proteins?
✔✔Amino acids
What is genetic engineering?
✔✔The manipulation of an organism's DNA to achieve desired traits
How does recombinant DNA technology work?
✔✔It involves combining DNA from two different sources to create a new set of genetic
material
What is the function of tRNA in protein synthesis?
✔✔To bring amino acids to the ribosome during translation
1
,What is the process by which cells divide to form two identical cells?
✔✔Mitosis
What is the role of the enzyme helicase in DNA replication?
✔✔To unwind the DNA double helix
What is the main function of the cell membrane?
✔✔To control the movement of substances in and out of the cell
What structure in plant cells contains chlorophyll?
✔✔Chloroplasts
What is the role of ribosomes in the cell?
✔✔To synthesize proteins
Which organelle is responsible for producing ATP in animal cells?
✔✔Mitochondria
2
, What is the main difference between prokaryotic and eukaryotic cells?
✔✔Prokaryotic cells do not have a nucleus, whereas eukaryotic cells do
What is the function of the vacuole in plant cells?
✔✔To store water and maintain turgidity
What process occurs in the mitochondria of the cell?
✔✔Aerobic respiration
What is the main role of the nucleus in a cell?
✔✔To control the activities of the cell and store genetic material (DNA)
What is a gene?
✔✔A section of DNA that codes for a specific protein
How does active transport differ from passive transport?
✔✔Active transport requires energy, while passive transport does not
3
