1 End of Chapter Questions

Question 0

Give three features of a plant or algal cell which are not found in animal cells

Answer 0

Cell wall

Chloroplasts

Permanent vacuole

Question 1

List the structures which are found in both animal and plant cells

Answer 1

Cell membrane

Cytoplasm

Nucleus

Mitochondria

Ribosomes

Question 2

Where do most chemical reactions take place in a cell?

Answer 2

In the cytoplasm

Question 3

Name three organs in the human digestive system

Answer 3

Any three of:

Salivary gland

Pancreas

Stomach

Liver

Small intestine

Large intestine

Question 4

What chemical produced by the liver aids digestion?

Answer 4

Bile

Question 5

What is meant by the term ‘differentiation of cells’?

Answer 5

When cells start to dive they are very similar.

As the tissues develop the cells change to form particular cells with particular functions.

Question 6

When, and in which direction, will diffusion take place in a solution and in gases?

Answer 6

If two solutions are separated by a cell membrane, particles will move from a region of high concentration to a region of low concentration.

Gases will also diffuse through the air from a region of high concentration to a region of low concentration

Question 7

How is a leaf cell adapted to carry out photosynthesis?

Answer 7

The leaf has mesophyll tissue.

The mesophyll cells contain chloroplasts which can photosynthesise

Question 8

Describe in detail what happens to food as it passes through the digestive sytem

Answer 8

The insoluble food is mixed with the digestive juices produces by glands

It is digested in the stomach and small intestine

Bile produces by the liver is added to the food to help digestion

Absorption of the soluble food takes place in the small intestine

Water is absorbed by the large intestine