1 Biology Pg 4

Question 1

What is the advantage of a larger surface area to volume ratio in cells?

Answer 1

A larger surface area to volume ratio ensures greater diffusion of substances in and out of the cell.

Question 2

How is the surface area of a cube calculated?

Answer 2

The surface area of a cube is calculated using the formula: side length x side length x 6 (surfaces).

Question 3

What happens to the surface area when a cube is cut into smaller cubes?

Answer 3

Cutting a cube into smaller cubes increases the total surface area while the total volume remains the same.

Question 4

What is the surface area of a cube with each side measuring 2 mm?

Answer 4

The total surface area is 24 sq. mm.

Question 5

What is the surface area of 8 smaller cubes each measuring 1 mm?

Answer 5

The total surface area is 48 sq. mm.

Question 6

What substances are involved in the diffusion process in cells?

Answer 6

Oxygen, carbon dioxide, nutrients, and metabolic wastes.

Question 7

What is one functional requirement of cell shapes?

Answer 7

Cell shapes vary to suit different functions they perform.

Question 8

What shape are human red blood cells, and why?

Answer 8

Human red blood cells are circular and biconcave to pass through narrow capillaries and transport oxygen.

Question 9

What are some examples of different cell shapes?

Answer 9

Cell shapes can be disc-like, polygonal, rectangular, cuboid, thread-like, branched, or irregular.