1.3 Transport in cells

64%

An aquarium fish can regenerate its gills if they are damaged.

What is diffusion? Select one option:

A: The movement of particles from an area of low concentration to an area of high concentration.
B: The net movement of particles from an area of higher concentration to an area of lower concentration.
C: The net movement of water from a dilute solution to a concentrated solution.

[1]

Gill filaments have many tiny projections called lamellae. Describe how this feature increases the rate of diffusion of oxygen into the blood.

[2]

Complete the sentences below about gill regeneration:

To grow new tissue for the regenerated gill, stem cells divide by the process of $1]\text{[blank 1]}$ .
When these stem cells specialize to become functional gill tissue cells, this process is known as $2]\text{[blank 2]}$ .

[2]

An aquarium fish can regenerate its gills if they are damaged.

What is diffusion? Select one option:

A: The movement of particles from an area of low concentration to an area of high concentration.
B: The net movement of particles from an area of higher concentration to an area of lower concentration.
C: The net movement of water from a dilute solution to a concentrated solution.

Gill filaments have many tiny projections called lamellae. Describe how this feature increases the rate of diffusion of oxygen into the blood.

[2]

Complete the sentences below about gill regeneration:

To grow new tissue for the regenerated gill, stem cells divide by the process of $1]\text{[blank 1]}$ .
When these stem cells specialize to become functional gill tissue cells, this process is known as $2]\text{[blank 2]}$ .

[2]

1.3 Transport in cells

1.3 Transport in cells Questions