Gas Exchange

Question 1

What does respiration produce in living organisms?

Answer 1

ATP

ATP (adenosine triphosphate) is the primary energy carrier in cells.

Question 2

How is energy transferred by respiration stored?

Answer 2

In ATP

ATP stores energy for immediate use in cellular processes.

Question 3

What are the two main functions of ATP?

Answer 3

Muscle contraction and active transport

ATP provides the energy required for muscle movement and the transport of substances across cell membranes.

Question 4

What process occurs in humans for gas exchange?

Answer 4

Diffusion

This process allows oxygen to enter the bloodstream and carbon dioxide to be offloaded.

Question 5

What is the role of alveoli in the body?

Answer 5

Gas exchange

Alveoli are tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged.

Question 6

When does photosynthesis occur in plants?

Answer 6

During the day

Photosynthesis requires sunlight to convert carbon dioxide and water into glucose and oxygen.

Question 7

Do plants respire all the time?

Answer 7

Yes

Plants respire continuously to obtain energy, even when they are not photosynthesizing.

Question 8

What do plants do at night when they cannot photosynthesize?

Answer 8

They take in O2 and release CO2 during respiration

This process is essential for their energy needs when sunlight is not available.

Question 9

Fill in the blank: Respiration produces _______ in living organisms.

Answer 9

ATP

Question 10

Fill in the blank: The energy transferred by respiration is stored in _______.

Answer 10

ATP

Question 11

True or False: Plants can photosynthesize at night.

Answer 11

False

Photosynthesis requires light, which is not available at night.