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Exam revision

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

Compare mechanical and chemical digestion.

a)

Chemical digestion breaks food down into smaller pieces. Mechanical digestion breaks complex molecules into simpler substances.

b)

Chemical and mechanical digestion both change complex foods into simpler substances.

c)

Mechanical digestion breaks food down into smaller pieces. Chemical digestion breaks complex molecules into simpler substances.

d)

Mechanical digestion only takes place in the mouth. Chemical digestion occurs in all other parts of the digestive system.

2.

Name the part of the animal cell that controls the functioning of the cell.

a)

ribosome

b)

mitochondrion

c)

cell membrane

d)

nucleus

3.

Name the part of a plant cell where a plant manufactures its food.

a)

chloroplast

b)

mitochondria

c)

nucleus

d)

cell wall

4.

Identify which one of the following comparisons between plant and fungal cells is not correct.

a)

both have a nucleus

b)

both have a cell membrane

c)

both contain chloroplasts

d)

both have a cell wall

5.

Mechanical digestion involves food particles being physically broken down into smaller particles.

For example, teeth mechanically digest food in the mouth, and the stomach churns food.

a)

true

b)

false

6.

Chemical digestion involves complex food molecules being broken down into simpler molecules by digestive juices that contain enzymes.

For example, digestive enzymes in saliva break starch down to simple sugars and chemicals in the stomach break proteins down into simpler molecules (amino acids).

a)

true

b)

false

7.

Name the type of animal cell that sends electrical messages around the body.

a)

muscle cell

b)

nerve cell

c)

skin cell

d)

blood cell

8.

Select the list that shows the level of organisation from most complex to least complex.

a)

organelle > cell > tissue > organ > organ system

b)

cell > organ system > tissue > organelle > organ

c)

organ system > organ > tissue > cell > organelle

d)

tissue > organelle > organ > cell > organ system

9.

A light microscope has an ocular lens with a magnification of ×4 and an objective lens with a magnification of ×10. Calculate the total magnification.

a)

x14

b)

x4

c)

x40

d)

x400

10.

Animal cells do not have cell walls.

a)

true

b)

false

11.

Animal cells do not have vacuoles.

a)

true

b)

false

12.

A microscope has an eyepiece of magnification x10. What magnification must the lower lens have to produce an image with an overall magnification of x200?

a)

x10

b)

x20

c)

x190

d)

x200

13.

Who was the person who first used the word ‘cell’ to name the microscopic cavities in cork?

a)

Rudolph Virchow

b)

Anton van Leeuwenhoek

c)

Matthias Schleiden

d)

Robert Hooke

14.

Which of the following is a type of specialised plant cell?

a)

Chloroform.

b)

Fat.

c)

Security.

d)

Guard.

15.

Which of the following statements concerning tiny organisms is correct?

a)

Some organisms are made up of only one cell.

b)

Even microscopic organisms contain a few hundred cells at least.

c)

The only type of single-celled organism is the amoeba.

d)

Single-celled organisms can only exist in other cells.

16.

The Cell Theory states that: All living things, or organisms are made up of cells.

a)

true

b)

false

17.

This specialised plant cell is known as a

a)

root hair cell

b)

xylem

c)

phloem

d)

root

18.

Which of the following statements about red blood cells is incorrect?

a)

they are able to flow easily through blood vessels

b)

they carry oxygen from the lungs to the cells where it is needed.

c)

they contain a nucleus

d)

they are specialised cells

19.

Which scientist made the first drawings of single-celled organisms (which he called ‘animalcules’)?

a)

Robert Hooke

b)

Anton van Leeuwenhoek

c)

Rudolph Virchow

d)

Theodor Schwann

20.

Select the best shape for cells that are specialised to absorb water into an organism.

a)

Small and cube-shaped so that they can fit tightly together.

b)

Spherical so that when they are packed together there are many air spaces between them.

c)

As big as possible so they can absorb a lot of water.

d)

Possessing many long, thin extensions of the cell membrane.