BIS IB Biology
End of Unit Test
Cells
Unit Test
Time allowed: 70 minutes
You may use a calculator
Write all answers on this paper
Section A: Multiple Choice (12 marks)
Section B: Structured Factual Recall (15 marks)
Section C: Structured Data Analysis (9 marks)
Section D: Extended Response (14 marks)
Name: _______________________
Date: _______________________
Score: ___/ 50 = ____ %
Bandung International School IB Biology
(IB Grade ___)
1
BIS IB Biology
End of Unit Test
Section A: Multiple Choice (circle the correct answer)
1. Which of the following is considered acellular or non-living?
A. Eukaryote cell
B. Prokaryote cell
C. Amoeba
D. Virus
2. A plasma membrane is 10nm thick. On a diagram, a student draws it 20mm thick.
What is the magnification of the drawn image?
A. X 5,000
B. X 100,000
C. X 2,000,000
D. X 2,000
3. Which of the following are fundamental statements of cell theory?
i. Cells come only from other cells
ii. Cells maximize their SA:Vol ratio
iii. All living things consist of cells
iv. Cells are the smallest units of life
A.
B.
C.
D.
i and ii
i, iii and iv
ii, iii and iv
i, ii, iii and iv
4. Which of the following organelles are present in prokaryotes but not eukaryotes?
A. Plasma membrane
B. Cytoplasm
C. Nucleoid
D. Nucleus
Bandung International School IB Biology
2
BIS IB Biology
End of Unit Test
5. Which part of the plasma membrane is involved in recognition of other cells?
A. Phospholipid bilayer
B. Integral proteins
C. Peripheral proteins
D. Cholesterol
6. The diagram below shows a channel protein in a plasma membrane.
Channel proteins allow polar molecules to pass through by facilitated diffusion.
Which labeled parts of the channel proteins are likely to be polar?
A. I and II only
B. III and IV only
C. I and III only
D. All parts
7. How do animals use cholesterol?
A. To store energy
B. To form part of the plasma membrane
C. To insulate neurons (nerve cells)
D. To increase blood pressure
8. Which cell organelle is responsible for the production of proteins to be exported from the cell?
A. Rough endoplasmic reticulum
B. Free ribsomes
C. Mitochondrion
D. Lysosome
Bandung International School IB Biology
3
BIS IB Biology
End of Unit Test
9. Which of the following correctly describes the process of osmosis?
A. The passive movement of water molecules from areas of low solute concentration to high
solute concentration, through a selectively permeable membrane.
B. The passive movement of water molecules from areas of high solute concentration to low
solute concentration, through a selectively permeable membrane.
C. The active movement of water molecules from areas of high solute concentration to low
solute concentration, using a membrane pump protein.
D. The passive movement of water molecules from areas of low solute concentration to high
solute concentration, through a channel protein.
10. During which phase of the cell cycle is the plasma membrane divided to give two new daughter
cells?
A. Interphase
B. Prophase
C. Anaphase
D. Cytokinesis
11. Which labels match ‘i’ and ‘ii’ respectively?
A. Centromere and chromosomes
B. Centriole and chromosomes
C. Centromere and sister chromatids
D. Centriole and sister chromatids
12. Which process is used to export a macromolecule from the cell?
A. Exocytosis
B. Endocytosis
C. Facilitated diffusion
D. Pinocytosis
End of Section A. 12 marks.
Bandung International School IB Biology
4
BIS IB Biology
End of Unit Test
Section B: Structured Factual Recall
1. In the image, the scale bar represents 1µm.
a. Calculate the length of the cell ‘A’.
B
A
_____________
(2)
b. By which method do prokaryotes reproduce?
……………………………………………………………………………………………………………………………………. (1)
2.
a. Explain how the surface area to volume ratio influences cell size.
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………… (3)
b. Compare prokaryotic and eukaryotic cells with regard to three features:
Eukaryotes
Prokaryotes
i
ii
iii
(3)
c. State one function of each of the following organelles.
i. lysosome
ii. ribosome
iii. Golgi apparatus
Bandung International School IB Biology
5
BIS IB Biology
End of Unit Test
(3)
3. a. Differentiate between diffusion and osmosis.
……………………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………………… (2)
b. An animal cell is placed in a hypotonic (very weak) sugar solution.
Will the cell increase or decrease in mass?
…………………………………………………………………………………………………………………………………………… (1)
End of Section B. 15 marks.
Section C: Structured Data Analysis
1.
A study was carried out to determine the relationship between the diameter of a molecule
and its movement through a membrane. The graph below shows the results of the study.
High
Relative ability to move
through a membrane
Low
0
0.4
0.8
1.2
1.6
Molecular diameter / nm
[Source: Knox, et al., Biology, Mcgraw Hill, Sydney, 1994, page 65]
(a)
From the information in the graph alone, describe the relationship between the
diameter of a molecule and its movement through a membrane.
.........................................................................................................................................
.........................................................................................................................................
Bandung International School IB Biology
6
BIS IB Biology
End of Unit Test
.........................................................................................................................................
.........................................................................................................................................
(2)
A second study was carried out to investigate the effect of passive protein channels on the
movement of glucose into cells. The graph below shows the rate of uptake of glucose into
erythrocytes by simple diffusion and facilitated diffusion.
Rate of glucose uptake /
mmol cm –3 cells hr –1
500
450
400
350
300
250
200
150
100
50
0
facilitated diffusion
simple diffusion
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
External concentration of glucose / mmol dm –3
(b) Identify the rate of glucose uptake at an external glucose concentration of
4 mmol dm-3by
(i)
simple diffusion.
.........................................
(1)
(ii)
facilitated diffusion.
............. ............................
(1)
(c)
(i)
Compare the effect of increasing the external glucose concentration on glucose
uptake by facilitated diffusion and by simple diffusion.
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
(3)
Bandung International School IB Biology
7
BIS IB Biology
(ii)
End of Unit Test
Predict, with a reason, the effect on glucose uptake by facilitated diffusion of
increasing the external concentration of glucose to 30 mmol dm-3.
………………………………………………………………………………………………………………………………………………
………………………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………………
(2)
End of Section C. 9 marks.
Section D: Extended Response
Answer these questions on the paper provided.
1. Draw labeled diagrams to show the four stages of mitosis in an animal cell with 2
chromosomes. Explain how mitosis ensures that daughter cells are genetically identical.
(9)
2. Outline one therapeutic use of stems cells.
(5)
End of Section D. 14 marks.
----END OF TEST: CHECK YOUR WORK --Bandung International School IB Biology
8