1. Which molecule carries the genetic code from the nucleus to the
ribosome?
A. mRNA
B. tRNA
C. rRNA
D. DNA
Answer: A) mRNA
Rationale: Messenger RNA (mRNA) carries the genetic code
transcribed from DNA to the ribosome for protein synthesis.
2. Which of the following best describes the function of ribosomal RNA
(rRNA)?
A. To carry genetic information
B. To assist in the synthesis of proteins
C. To bind to specific amino acids
D. To break down proteins
Answer: B) To assist in the synthesis of proteins
Rationale: Ribosomal RNA (rRNA) is a key component of ribosomes,
which are the sites of protein synthesis in the cell.
,3. Which of the following is true about the light-independent reactions
of photosynthesis?
A. They occur in the mitochondria.
B. They require light to produce glucose.
C. They produce oxygen as a byproduct.
D. Th
Answer: D) They occur in the stroma of the chloroplast
Rationale: The light-independent reactions, also known as the Calvin
cycle, occur in the stroma of the chloroplast, where carbon fixation and
glucose production take place.
4. Which of the following is a characteristic of asexual reproduction?
A. Requires two parents
B. Produces genetically diverse offspring
C. Involves the fusion of gametes
D. Produces genetically identical offspring
Answer: D) Produces genetically identical offspring
Rationale: Asexual reproduction involves a single parent and produces
offspring that are genetically identical to the parent, as there is no
genetic recombination.
5. What type of bond holds the two strands of DNA together?
A. Ionic bond
, B. Hydrogen bond
C. Covalent bond
D. Metallic bond
Answer: B) Hydrogen bond
Rationale: Hydrogen bonds hold the complementary base pairs
together in the double-stranded DNA structure, ensuring the stability
of the DNA helix.
6. Which of the following is true about DNA replication?
A. It occurs during the G1 phase of the cell cycle.
B. It is a semi-conservative process.
C. It occurs during the G2 phase of the cell cycle.
D. It requires no enzymes to catalyze the reaction.
Answer: B) It is a semi-conservative process.
Rationale: In DNA replication, each new DNA molecule consists of one
original strand and one newly synthesized strand, making it semi-
conservative.
7. Which of the following is an example of a lipid?
A. Glucose
B. Enzyme
C. Steroid
D. Nucleic acid
ribosome?
A. mRNA
B. tRNA
C. rRNA
D. DNA
Answer: A) mRNA
Rationale: Messenger RNA (mRNA) carries the genetic code
transcribed from DNA to the ribosome for protein synthesis.
2. Which of the following best describes the function of ribosomal RNA
(rRNA)?
A. To carry genetic information
B. To assist in the synthesis of proteins
C. To bind to specific amino acids
D. To break down proteins
Answer: B) To assist in the synthesis of proteins
Rationale: Ribosomal RNA (rRNA) is a key component of ribosomes,
which are the sites of protein synthesis in the cell.
,3. Which of the following is true about the light-independent reactions
of photosynthesis?
A. They occur in the mitochondria.
B. They require light to produce glucose.
C. They produce oxygen as a byproduct.
D. Th
Answer: D) They occur in the stroma of the chloroplast
Rationale: The light-independent reactions, also known as the Calvin
cycle, occur in the stroma of the chloroplast, where carbon fixation and
glucose production take place.
4. Which of the following is a characteristic of asexual reproduction?
A. Requires two parents
B. Produces genetically diverse offspring
C. Involves the fusion of gametes
D. Produces genetically identical offspring
Answer: D) Produces genetically identical offspring
Rationale: Asexual reproduction involves a single parent and produces
offspring that are genetically identical to the parent, as there is no
genetic recombination.
5. What type of bond holds the two strands of DNA together?
A. Ionic bond
, B. Hydrogen bond
C. Covalent bond
D. Metallic bond
Answer: B) Hydrogen bond
Rationale: Hydrogen bonds hold the complementary base pairs
together in the double-stranded DNA structure, ensuring the stability
of the DNA helix.
6. Which of the following is true about DNA replication?
A. It occurs during the G1 phase of the cell cycle.
B. It is a semi-conservative process.
C. It occurs during the G2 phase of the cell cycle.
D. It requires no enzymes to catalyze the reaction.
Answer: B) It is a semi-conservative process.
Rationale: In DNA replication, each new DNA molecule consists of one
original strand and one newly synthesized strand, making it semi-
conservative.
7. Which of the following is an example of a lipid?
A. Glucose
B. Enzyme
C. Steroid
D. Nucleic acid
