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Edexcel A-Level Biology AS 3.5 Prokaryotic Cell Ultrastructure Questions

Label the bacterial structure first, state its function and use circular DNA, absent membrane-bound organelles or wall composition for a precise comparison.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
AS

Exam points

  • Label bacterial cell walls, membranes, capsules, plasmids, pili and flagella.
  • Relate flagella, pili, capsules and membranes to movement, adhesion or transport.
  • Compare prokaryotic and eukaryotic cells through DNA and organelle evidence.

Edexcel A-Level Biology AS 3.5 Prokaryotic Cell Ultrastructure Questions question 1

[Maximum number: 2]

All organisms contain one or more cells.

Question (a)

(a)

In which of the following is a cell wall present?

A

plant cells only

B

animal and plant cells only

C

plant and prokaryotic cells only

D

animal, plant and prokaryotic cells

[ 1 ]

Question (b)

(b)

Sailor's eyeball (Valonia ventricosa) is a single-celled, spherical organism. The diagram shows one of these cells.

Figure for Question (b) — Edexcel A-Level Biology AS
[ 1 ]

Question (i)

(i)

This cell is not a prokaryotic cell as it contains chloroplasts.

Give one other reason why this organism is not a prokaryotic cell.

[ 1 ]
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