3.1.1: Gas Exchange In Insects

Question 1

What is the system involved in gas exchange in insects?

Answer 1

Tracheal system

The tracheal system is composed of spiracles and trachea.

Question 2

How do insects move gases in and out of the spiracles?

Answer 2

By contracting and relaxing abdominal muscles

Question 3

What maintains the concentration gradient for gas diffusion in insects?

Answer 3

Cell respiration using oxygen and producing carbon dioxide

Question 4

What type of respiration do muscle cells perform when an insect is in flight?

Answer 4

Anaerobic respiration

Question 5

What is produced as a result of anaerobic respiration in insects?

Answer 5

Lactate

Question 6

What effect does lactate have on the water potential of insect cells?

Answer 6

Lowers the water potential

Question 7

What process causes water to move from the tracheoles into the insect cells?

Answer 7

Osmosis

Question 8

What happens to the volume in the tracheoles when water moves into the cells?

Answer 8

Decreases

Question 9

What causes more air from the atmosphere to move into the tracheoles?

Answer 9

Decrease in volume in the tracheoles

Question 10

Fill in the blank: Gas exchange in insects involves a _______ system.

Answer 10

[tracheal]

Question 11

True or False: Insects use spiracles for gas exchange.

Answer 11

True