cell biology quiz

Question 1

1. What is a cell?

Answer 1

A cell is the smallest living part, the building block of life

Question 2

2. Define eukaryotic cell

Answer 2

Cells which contain their DNA in a nucleus

Question 3

3. State the function of the nucleus.

Answer 3

control’s all activites of the cell

Question 4

4. State the function of the cytoplasm.

Answer 4

Where most chemical reactions take place

Question 5

5. State the function of the cell membrane

Answer 5

Controls what substances go in and out of the cell

Question 6

6. State the function of the mitochondria

Answer 6

to create energy for the cell through respiration

Question 7

7. State the function of the ribosomes.

Answer 7

protien synthesis for cell reproduction

Question 8

8. What substance makes up plants’ cell walls?

Answer 8

cellulose

Question 9

9. State the function of the cell wall.

Answer 9

to strenghten the plant cell, help cell be turgid

Question 10

10. State the function of the chloroplasts

Answer 10

needed for photosythesis by absorbing light

Question 11

11. State the function of the permanent vacuole

Answer 11

to provide structure to the plant, contains cell sap

Question 12

12. State three differences between animal and plant cells

Answer 12

Plant cells have chloroplasts, permanent vacuole and cellulose cell wall. Animal cells do not

Question 13

13. State a key difference between prokaryotes and eukaryotes.

Answer 13

eukaryotes contain DNA in nucleus prokaryotes don’t

Question 14

14. State one organism that is prokaryotic

Answer 14

bacteria

Question 15

15. Prokaryotes have a cell wall. True or false?

Answer 15

true however it is not made out of celluolse

Question 16

16. Some bacteria have an extra layer on top of their cell walls. What is the name of that layer?

Answer 16

capsule

Question 17

17. Where does the genetic material of a prokaryotic cell exist

Answer 17

in rings called plasmids or in the cytoplasam

Question 18

18. What is a difference between prokaryotic and eukaryotic DNA?

Answer 18

prokaryotic cell’s have circular DNA and eukaryotic cells have linear

Question 19

19. What is the name of extra small DNA rings found in some prokaryotes?

Answer 19

Plasmids

Question 20

20. What is the function of flagella?

Answer 20

to help cell move and swim around

Question 21

21. State a difference between animal cells and bacteria

Answer 21

A: No cell wall and linear DNA; B: Cell wall and plasmid, circular DNA

Question 22

22. State a similarity between plant cells and bacterial cells.

Answer 22

Both have cell walls (but different material)

Question 23

23. State the equation that links magnification, image size and actual size.

Answer 23

image size = actual size times by magnification

Question 24

24. Convert 5mm to µm.

Answer 24

5000µm

Question 25

25. How do we calculate the total magnification of a microscope

Answer 25

Eyepiece lens x Objective lens magnifying power

Question 26

26. Which type of microscope has higher magnification and resolving power - Light or electron?

Answer 26

electron

Question 27

27. Which objective lens should we start using when using a microscope?

Answer 27

lowest

Question 28

28. How must a specimen be prepared to be viewed under a light microscope?

Answer 28

usually as thin as possibly can be and stained to see easily

Question 29

29. Explain how electron microscopy has increased understanding of organelles.

Answer 29

Electron microscopes have much greater magnification and resolution. Organelles can be seen with electron microscope

Question 30

30. Describe what the image using an electron microscope might look like

Answer 30

Black and grey (not transparent) sometimes in 3D

Question 31

31. Why must we not use the coarse focus knob during high power magnification?

Answer 31

It moves the stage by too much, may break the slide on the objective lens