Edexcel IGCSE Biology B Cell Structure Questions
Practise identifying cell parts, comparing plant and animal cells, and explaining differentiation and stem-cell treatment evidence.
- Syllabus
- First assessment 2019
- Course
- Biology 4BI1
Exam points
- identify labelled structures
- compare plant, animal and Euglena cells by selecting which structures are present or absent
- explain stem-cell uses using division, differentiation, matching antigens and rejection risk
Covered syllabus points
Question 1
Euglena is a microorganism that lives in water.
The diagram shows Euglena with some structures labelled.
Question (a)
(a)
Which structure is the site of respiration?
A
P
B
R
C
T
D
U
Question (b)
(b)
Which structure contains chromosomes?
A
P
B
Q
C
R
D
T
Question (c)
(c)
Which structure is the cell membrane?
A
P
B
Q
C
R
D
U
Question (d)
(d)
Euglena has some structures that are found in plant cells but not in animal cells.
Which labelled structure is found in plant cells but not in animal cells?
A
P
B
Q
C
S
D
T
Question 2
The diagram shows a single-celled organism called Chlorella that lives in fresh water. Chlorella has a chloroplast and can photosynthesise.
Which of these labelled structures would also be present in an animal cell?
A
cell membrane and chloroplast
B
cell membrane and mitochondrion
C
cell wall and chloroplast
D
cell wall and mitochondrion
Question 3
Scientists produce large numbers of genetically identical plants using micropropagation. The diagram shows some of the stages of micropropagation.
In micropropagation, small pieces of plant tissue can grow into new individuals.
Explain why small pieces of animal tissue cannot grow into new individuals.
Question 4
Euglena is a microorganism that lives in water.
The diagram shows Euglena with some structures labelled.
Which structure is the cell membrane?
A
P
B
Q
C
R
D
U
Question 5
The human heart pumps blood when its muscle tissue contracts.
Diagram 1 shows a human heart and a cross-section through its ventricles.
Diagram 1
Question (a)
(a)
Scientists are investigating the use of stem cells to repair damaged hearts.
The stem cells are injected into the ventricle muscle tissue.
Question (i)
(i)
Explain why stem cells could repair a damaged heart.
Question (ii)
(ii)
The stem cells are obtained from the person who has the damaged heart.
Explain why using stem cells from the same person is better than using stem cells from a different person.
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