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411
What is the role of ribosomes in a cell?
A:
Protein synthesis
B:
DNA replication
C:
Lipid production
D:
Cellular respiration
412
Which organelle is known as the powerhouse of the cell?
A:
Nucleus
B:
Mitochondria
C:
Ribosome
D:
Golgi apparatus
413
What is the primary function of the cell membrane?
A:
Energy production
B:
Selective permeability
C:
Protein synthesis
D:
DNA replication
414
What type of reaction is used to join amino acids together?
A:
Hydrolysis
B:
Condensation
C:
Oxidation
D:
Reduction
415
What is the structure of a nucleotide?
A:
Sugar, phosphate, base
B:
Amino acid, peptide bond
C:
Sugar, fatty acid, base
D:
Sugar, base, peptide bond
416
Which of the following is a coenzyme?
A:
Vitamin C
B:
Hemoglobin
C:
ATP
D:
DNA
417
What is the main function of carbohydrates in the body?
A:
Energy storage
B:
DNA synthesis
C:
Oxygen transport
D:
Hormone production
418
What is the primary function of enzymes in biochemical reactions?
A:
To act as a substrate
B:
To increase activation energy
C:
To speed up reactions
D:
To act as a product
419
What is the role of ribosomes in the cell?
A:
DNA replication
B:
Protein synthesis
C:
Lipid synthesis
D:
Carbohydrate breakdown
420
Which enzyme is responsible for DNA replication?
A:
DNA polymerase
B:
RNA polymerase
C:
Ligase
D:
Helicase
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