Year 11 Biology: Cells As The Basis Of Life Practice Questions

Have you mastered Year 11 Biology Module 1? Test yourself with these 10 practice questions.

You can find the answers at the bottom of the page.

Questions

Question 1

Outline the three tenets of classical cell theory.

Question 2

Identify THREE differences between eukaryotes and prokaryotes.

Question 3

Explain how the structure of mitochondria relates to its function.

Question 4

True or false?

Small, non-polar and neutral substances such as water, carbon dioxide and oxygen move through the phospholipid bilayer via active transport.

Question 5

Outline how plants obtain energy.

Question 6

Identify the structures labelled A, B and C in this lock and key model diagram.

Question 7

Outline the main differences between aerobic and anaerobic respiration.

Question 8

True or false?

The movement of water from areas of high concentration to areas of low concentration is called osmosis.

Question 9

A scientist wishes to visualise the detail of organelles within a cell.

Which of the following is the best technique to use?

(a) Transmission electron microscopy

(b) B. Scanning electron microscopy

(c) C. Staining

(d) D. Phase-contrast microscopy

Question 10

True or false?

Endocytosis is the process that transports materials such as hormones and waste products out of the cell.

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Answers

Question 1

• Cells are the fundamental unit of life
• All organisms are made up of one or more cells
• All cells come from pre-existing cells

Question 2

Eukaryotes

• DNA is stored in the nucleus.
• Have membrane-bound organelles.
• No cell wall (except in plants, fungi and some protists).

Prokaryotes

• DNA is free-floating in the cytoplasm.
• No membrane-bound organelles.
• Have a cell wall.

Question 3

The inner mitochondrial membrane has many folds called cristae that increase its surface area while maintaining a relatively small volume.

As cellular respiration reactions occur on the inner membrane, high surface area maximises the rate of cellular respiration to efficiently produce ATP and meet the energy demand of the cell.

Question 4

False

Question 5

Plants are autotrophs that make their own food through the process of photosynthesis.

Photosynthesis is a two-step process:

1. The light-dependent stage which requires sunlight and occurs in the thylakoid membrane and the light-independent stage which does not require sunlight and takes place in the stroma fluid of the chloroplast.
2. Photosynthesis converts water and carbon dioxide into oxygen and glucose which is used as a source of energy.

Question 6

A = Substrates

B = Enzyme

C = Product

Question 7

• Aerobic respiration requires oxygen, but anaerobic respiration does not.
• Aerobic respiration can produce up to 36 ATP from one glucose molecule, but anaerobic respiration produces only 2.
• Aerobic respiration is completed within the mitochondria, but anaerobic respiration is not.

Question 8

True

Question 9

(a) Transmission electron microscopy

Question 10

False

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