Cell - Biology

Question 1

What 3 features does a eukaryotic cell have that a prokaryotic cell doesn’t?

Answer 1

• mitochondria
• chloroplasts
• nucleus

Question 2

How many micrometers (um) are prokaryotes.

Answer 2

0.1-5.0

Question 3

How many micrometers (um) are eukaryotes

Answer 3

10-100

Question 4

What type of cell are eukaryotes

Answer 4

Plants, animals and fungi

Question 5

What type of cell are prokaryotes

Answer 5

Bacterial

Question 6

How much times larger are eukaryotes

Answer 6

1,000

Question 7

Give 1 example of a eukaryote and a prokaryote

Answer 7

Pro: e.coli
Eu: sequoia trees

Question 8

What is magnification?

Answer 8

Makes the object appear larger

Question 9

What is resolution

Answer 9

The ability to tell apart 2 or more objects close together

Question 10

True or false? When they turn out close together, it’s a high resolution

Answer 10

False. When they turn of separate it’s a high resolution

Question 11

A cell has a diameter of 0.002cm. An image of the cell viewed through the microscope diameter is 6cm. What’s the magnification.

Answer 11

3000(um)

Question 12

Name 3 objects that are only visible through microscopes.

Answer 12

• ribosomes
• xylem cells
• cell membranes

Question 13

What’s the magnification of x240 000 in standard form?

Answer 13

2.4 x 10^5

Question 14

Name the 2 different types of microscopes

Answer 14

Light and electron

Question 15

What microscope has a higher resolution and magnification

Answer 15

Electron

Question 16

Name 3 sub-cellular structures found in plants but not animal cells

Answer 16

• chloroplasts
• permanent vacuole
• cell wall

Question 17

What lens has the lowest magnification

Answer 17

Objective lens

Question 18

What is the function of the mitochondria

Answer 18

Where aerobic respiration takes place

Question 19

What’s the function of the nucleus

Answer 19

Genetic material that controls the cell activity

Question 20

Function of the cell membrane

Answer 20

Control what goes in and out

Question 21

Function of ribosomes

Answer 21

Where proteins are made

Question 22

Functions of cytoplasm

Answer 22

Reactions takes place

Question 23

Function of chloroplasts

Answer 23

Photosynthesis occurs

Question 24

Function of vacuole

Answer 24

Contains cell sap

Question 25

Function of cell wall

Answer 25

Made of cellulose and strengthens the cell

Question 26

True or false? Prokaryotes don’t have a true nucleus

Answer 26

True

Question 27

What is the equation for magnification

Answer 27

M= image size / actual size

Question 28

What is 0.0045 in standard form

Answer 28

4.5 x 10^-3

Question 29

Fill in the missing gaps: 0.1cm = …mm = 1000…= ……..nm

Answer 29

0.1cm = 1 mm = 1000 um = 1 000 000 nm

Question 30

What’s 1000mm to cm?

Answer 30

100cm

Question 31

Calculator can be used (I think): 8400 nm to um

Answer 31

8.4um

Question 32

0.0009 mm to nm

Answer 32

900nm

Question 33

Write the following in standard form: A) 0.025 B) 18 000 000 C) 0.00064

Answer 33

A) 2.5 x 10^ -2 B) 1.8 x 10^ 7 C) 6.4 x 10^ -4

Question 34

What type of cell contains a nucleus?

Answer 34

Eukaryotic cells

Question 35

Function of sperm cells

Answer 35

To fertilise the female egg cell

Question 36

Function of nerve cell

Answer 36

To send electrical impulses around the body

Question 37

Function of the red blood cell

Answer 37

To transport oxygen around the body

Question 38

Function of the root hair cell

Answer 38

To absorb water & minerals from the soil

Question 39

Function of the phloem

Answer 39

Transports dissolved sugars around the plant

Question 40

Function of the xylem

Answer 40

Transports water through the plant from the roots to the leave.

Question 41

Name 1 adaptation of the sperm cell

Answer 41

Either: streamline head, long tail, lots of mitochondria

Question 42

Name 1 adaptation of the nerve cell

Answer 42

Either : long axon , dendrites

Question 43

Name 1 adaptation of the red blood cell

Answer 43

Either: no nucleus, disc shape to increase surface area for oxygen

Question 44

Name 1 adaptation of the root hair cell

Answer 44

large surface are to absorb more water

Question 45

Name 1 adaptation of the phloem

Answer 45

Either: pores to allow flow of cell sap, long & joined end to end

Question 46

Name 1 adaptation of the xylem

Answer 46

Either: hollow in the centre , tubes joined end to end , strengthened because of lignin.

Question 47

What are the properties of exchanging substances

Answer 47

1- large surface area 2- thin membrane 3- blood supply 4- ventilation

Question 48

Name 4 adaptation organs for gas exchange

Answer 48

1- leaves (flat&stomata) 2- gills in fish (lots of capillaries & covered in lamellae) 3- small intestine (absorption of food molecules) 4- alveoli- in lungs(air in &out, thin walls)

Question 49

Do single cell organisms have a large or small SA:VOlUME RATIO?

Answer 49

Large

Question 50

Do multicellular organisms have a large or small SA:VOlUME RATIO?

Answer 50

Small