Biology 9th Chap 7 : Topic 7 - Maryam Publications

Biology Chapter 7 : Topic 7

Photosynthesis in Plants

1 / 15

What is ATP?

A) Adenosine triphosphate, the energy currency of the cell

B) A type of enzyme

C) A structural protein

D) A genetic material

2 / 15

Why is ATP called the “energy currency” of the cell?

A) It forms cell walls

B) It transports oxygen

C) It stores and transfers energy in usable form

D) It stores genetic information

3 / 15

The energy in ATP is mainly stored in:

A) Ionic bonds

B) Hydrogen bonds

C) High-energy phosphate bonds

D) Peptide bonds

4 / 15

ATP releases energy when it is converted into:

A) DNA + RNA

B) Glucose + oxygen

C) Protein + amino acid

D) ADP + Pi

5 / 15

Which process produces ATP in cells?

A) Cellular respiration

B) Excretion

C) Diffusion

D) Photosynthesis only

6 / 15

ATP is directly used to power:

A) Only digestion

B) Only photosynthesis

C) Cellular activities such as active transport and muscle contraction

D) Only respiration

7 / 15

The full form of ATP is:

A) Amino triphosphate

B) Active transport protein

C) Adenosine triphosphate

D) Adenine tissue phosphate

8 / 15

Which statement correctly describes ATP function?

A) It carries genetic information

B) It stores and releases energy in small usable amounts

C) It is a structural component of cells

D) It stores long-term energy only

9 / 15

What happens when ATP loses one phosphate group?

A) It becomes protein

B) It becomes glucose

C) It becomes DNA

D) It becomes ADP and releases energy

10 / 15

Which organelle is mainly responsible for ATP production?

A) Ribosome

B) Mitochondria

C) Vacuole

D) Nucleus

11 / 15

ATP is continuously recycled in cells because it:

A) Is unstable and breaks easily

B) Is stored permanently

C) Is rapidly regenerated from ADP

D) Is not used by cells

12 / 15

Which type of energy conversion involves ATP?

A) Chemical energy → Usable cellular energy

B) Mechanical energy → Light energy

C) Sound energy → Electrical energy

D) Nuclear energy → Heat energy

13 / 15

Which process uses ATP most directly?

A) All of the above

B) Protein synthesis

C) All metabolic activities

D) Cell division

14 / 15

ATP is considered a short-term energy storage molecule because:

A) It stores energy permanently

B) It stores energy in DNA

C) It releases energy immediately when needed

D) It cannot be broken down

15 / 15

Which statement best summarizes ATP?

A) ATP is a waste product of respiration

B) ATP is the main energy carrier molecule used by cells

C) ATP stores genetic information

D) ATP is only found in plants

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