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Self-Testing Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in B. It controls the chemical reactions in the C. It regulates the metabolic activities of D. It controls the number of division of the

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Page 1: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Self-TestingSelf-Testing

Q: How does DNA control the metabolic activities of the cells?

A. It controls the formation of proteins in the cells.

B. It controls the chemical reactions in the cells.

C. It regulates the metabolic activities of the cells.

D. It controls the number of division of the cells.

Page 2: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Congratulations!

You’ve got the correct answer!

Go to next question...

Page 3: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Sorry, you’ve got the wrong answer!

DNA cannot control the chemical reactions in the cells directly.

Try again...

Page 4: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Sorry, you’ve got the wrong answer!

DNA cannot regulate the metabolic activities of the cells directly.

Try again...

Page 5: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Sorry, you’ve got the wrong answer!

DNA cannot control the number of divisions of the cells directly.

Try again...

Page 6: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Self-TestingSelf-TestingHere are photomicrographs showing (1) some cells of a human blood smear; (2) some cells of an onion epidermis:

Q: Which of the following is NOT a structural difference between cells A and C?

A. C has cell wall but A does not.

B. C has small nucleus but A has large nucleus.

C. C has chloroplast but A does not.

D. C has vacuole but A does not.

(1) (2)

Page 7: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Sorry, not correct!

C is a plant cell and therefore it has cell wall. A is an animal cell and

therefore it does not have cell wall.

Try again...

Page 8: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Incorrect!

This is a true statement.

Try again...

Page 9: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Congratulations!

You’ve got the correct answer!

Go to next question...

Page 10: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Sorry!

This is a true statement.

Try again...

Page 11: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Self-TestingSelf-TestingHere are photomicrographs showing (1) some cells of a human blood smear; (2) some cells of an onion epidermis:

Q: Why does the central part of cell B looks lighter in color?A. There contains less nucleus to increase the surface area to facilitate gases diffusion.B. There contains less cytoplasm to increase the surface area to facilitate gases diffusion.C. There contains less hemoglobin to increase the surface area for gases to dissolve in.D. There is nothing in its central part as it a ring- shaped cell.

(1) (2)

Page 12: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

No!

Red blood cells do not contain nucleus.

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Page 13: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Congratulations!

You’ve got the correct answer!

Go to next question...

Page 14: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Sorry, you’ve got the wrong answer!

Hemoglobin itself is for carrying gases (oxygen).

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Page 15: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Sorry, you’ve got the wrong answer!

Red blood cell is a biconcave disc, not ring-shaped.

Try again...

Page 16: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Self-TestingSelf-TestingHere are photomicrographs showing (1) some cells of a human blood smear; (2) some cells of an onion epidermis:

Q: What is the function of cell A?

A. To kill germs by producing antibiotics.

B. To kill germs by engulfing them.

C. To expel germs out of body through urination.

D. To expel germs out of body through sweating.

(1) (2)

Page 17: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

No!

Cell A is the white blood cell. Some of them can kill germs by producing

antibodies, not antibiotics.

Try again...

Page 18: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Congratulations!

You’ve got the correct answer!

Go to next question...

Page 19: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

That is incorrect!

Cell A is the white blood cell, which cannot expel germs out of human

body.

Try again...

Page 20: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

No!

Cell A is the white blood cell, which cannot expel germs out of human

body.

Try again...

Page 21: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Self-TestingSelf-TestingHere are photomicrographs showing (1) some cells of a human blood smear; (2) some cells of an onion epidermis:

Q: What would happen to cell B if they were put into a concentrated salt solution for half an hour?

A. Cell B will remain the same.

B. Cell B will burst.

C. Cell B will be plasmolysed.

D. Cell B will shrink.

(1) (2)

Page 22: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Not quite!

Osmosis is occurring between cell B and the salt solution. Therefore,

cell B cannot remain the same.

Try again...

Page 23: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

No.

Cell B will burst only if it was put into a dilute solution.

Try again...

Page 24: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

That is not right.

Plasmolysis will occur only when a plant cell is put into a concentrated solution due to the presence of cell

wall in plant cell.

Try again...

Page 25: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Great!

You’ve got the correct answer!

Go to next question...

Page 26: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Self-TestingSelf-TestingHere are photomicrographs showing (1) some cells of a human blood smear; (2) some cells of an onion epidermis:

Q: What would happen to cell C if they were put into a hypertonic solution?

A. Cell B will remain the same.

B. Cell B will burst.

C. Cell B will be plasmolized.

D. Cell B will shrink.

(1) (2)

Page 27: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Oops!

Osmosis is occurring between cell C and the hypertonic solution.

Therefore, cell B cannot remain the same.

Try again...

Page 28: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Not since I last checked!

Cell C will not burst even if it was put into a dilute solution due to the

presence of the cell wall.

Try again...

Page 29: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

Wonderful!

You’ve got the correct answer!

Click hereto end

Page 30: Self-Testing Q: How does DNA control the metabolic activities of the cells? A. It controls the formation of proteins in the cells. B. It controls the

No!

Cell C will not shrink due to the presence of the cell wall.

Try again...


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