General Biology 1/2 Quiz

What is the structure of ATP?

• Adenine, ribose, three phosphate groups

• Guanine, ribose, three phosphate groups

• Thymine, deoxyribose, three phosphate groups

• Adenine, ribose, two phosphate groups

What is the role of the triphosphate tail in ATP?

• It provides energy for cellular work

• It stores water in the cell

• It carries genetic information

• It helps in protein synthesis

What is the process called when a phosphate group is transferred from ATP to another molecule?

• Hydrolysis

• Oxidation

• Phosphorylation

• Dehydration synthesis

What is the mechanism of the ADP-ATP cycle?

• It involves only exergonic reactions

• It does not involve any chemical reactions

• It involves only endergonic reactions

• It alternates between endergonic and exergonic reactions

What is the energy cost of the coupled reactions involving sucrose synthesis?

• +27 kJ/mol

• +3 kJ/mol

• -30 kJ/mol

• -3 kJ/mol

What is the function of ATP in cellular processes?

• It helps in cell division

• It stores excess water in the cell

• It energizes other molecules by transferring phosphate groups

• It provides structural support to the cell

What happens to ATP when it transfers a phosphate group to another substance?

• It becomes UTP

• It becomes ADP

• It becomes AMP

• It becomes GTP

Which of the following require ATP?
I. Making DNA, RNA and proteins.
II. Active transport of ions across membranes.
III. Osmosis.
IV. Musclec ontractions.

• I, II, and IV

• III and IV

• II and IV

• IV

Which of the following statements would be a perceived advantage of ATP?

I. ATP is a stable molecule
II. Acts as an instant source of energy for the cell
III. It is a universal energy carrier and can be used in many chemical reactions
IV. It is a small mobile molecule which can be easily transported to other cells

• I, II, III, and IV

• I, and II

• II, and III

• II, III, and IV

ATP is a chemical substance generated in cellular respiration; it is an immediate source of energy for the cell. ATP can easily be hydrolyzed or re-synthesized. What are the two products crated when ATP is hydrolyzed by water?