CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+
1. Which structure is responsible for protein synthesis?
A. Nucleus
B. Ribosome
C. Golgi apparatus
D. Lysosome
Answer: B. Ribosome
Explanation: Ribosomes translate mRNA into proteins. They
can be free in the cytoplasm or attached to the rough ER.
2. Which macromolecule stores genetic information?
A. Protein
,B. Lipid
C. Carbohydrate
D. Nucleic acid
Answer: D. Nucleic acid
Explanation: DNA and RNA are nucleic acids that store and
transmit genetic information.
3. The functional unit of the kidney is the:
A. Neuron
B. Nephron
C. Alveolus
D. Glomerulus
Answer: B. Nephron
Explanation: The nephron filters blood and forms urine.
4. Which phase of mitosis involves chromosome alignment?
A. Prophase
,B. Metaphase
C. Anaphase
D. Telophase
Answer: B. Metaphase
Explanation: Chromosomes align at the metaphase plate
during metaphase.
5. What is the main function of enzymes?
A. Store energy
B. Speed up reactions
C. Transport molecules
D. Provide structure
Answer: B. Speed up reactions
Explanation: Enzymes are biological catalysts that lower
activation energy.
6. Which organelle modifies and packages proteins?
, A. Ribosome
B. Golgi apparatus
C. Mitochondrion
D. Nucleus
Answer: B. Golgi apparatus
Explanation: The Golgi processes and packages proteins for
transport.
7. Which process produces ATP in mitochondria?
A. Glycolysis
B. Krebs cycle
C. Oxidative phosphorylation
D. Fermentation
Answer: C. Oxidative phosphorylation
Explanation: Most ATP is produced through oxidative
phosphorylation.
8. Which molecule carries oxygen in blood?