Biology 3

Question 1

What is Partially Permeable membrane?

Answer 1

A membrane that is permeable to the small molecules of water and certain solutes but does not allow the passage of large solute molecules.

Question 2

Describe how water moves from roots to the leaves.

Answer 2

Water moves from the roots to the leaves through a tissue called Xylem, in a process called transpiration.

Question 3

What is required in order fro active transport to take place?

Answer 3

Low concentration to high concentration using energy.

Question 4

What is the name of the structure which carries molecules across the cell membrane during active transport.

Answer 4

Protein Carrier.

Question 5

Which process released the energy needed for active transport?

Answer 5

Respiration.

Question 6

Give an example of a plant cell where active transport commonly takes place.

Answer 6

Root Hair cell.

Question 7

Describe the function and special feature of a Nerve cell.

Answer 7

Function;
Carries messages to the brain.
Special Feature;
Collision and coordination.

Question 8

Describe the function and special feature of a sperm cell.

Answer 8

Function;
It fertilizes the egg.
Special Feature;
It has a head and tail.

Question 9

Describe the function and special feature of a Ovum/Egg cell.

Answer 9

Function;
Joins the sperm to make a baby.
Special Feature;
It has a cytoplasm which has ‘‘yolk’’ which is full of nutrients.

Question 10

Describe the function and special feature of a Ciliated epithelial cell.

Answer 10

Function;
help move particles out of the body.
Special Feature;
Tiny hair like structures.

Question 11

Describe the function and special feature of a Muscle cell.

Answer 11

Function;
contracts and changes its shape.
Special Features;
Each muscle is made up of cells.

Question 12

Describe the function and special feature of a Red Blood Cell.

Answer 12

Function;
To carry oxygen-rich blood all around the body.
Special Feature;
They only live for 120 days.

Question 13

Describe the function and special feature of a Root hair cell.

Answer 13

Function;
Collects water and minerals from the soil.
Special Feature;
Doesn’t carry out photosynthesis.

Question 14

Describe the function and special feature of a Xylem Vessel.

Answer 14

Function;
Transports vitamins and minerals all around the plant.
Special Feature;
The Vessels have no cytoplasm.

Question 15

Describe the function and special feature of a Phloem Vessel.

Answer 15

Function;
Move food substances that plants have produced.
Special Feature;
Has special Sieve tubes

Question 16

What is Translocation?

Answer 16

Translocation is the movement of materials from leaves to other tissues throughout the plant.

Question 17

What is Transpiration?

Answer 17

Transpiration is the process by which moisture is carried through plants from roots to small pores on the underside of leaves, where it changes to vapor and is released to the atmosphere. Transpiration is essentially evaporation of water from plant leaves.