Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Core Questions > Cells > Flashcards

Cells Flashcards

1
Q

Unicellular organism

A

An organism made up of only one cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Multicellular organism

A

An organism made up of many cells.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Name a piece of equipment used to see cells:

A

A microscope.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the function of a microscope?

A

To magnify an image.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What part of a microscope magnifies the image?

A

The objective lens and the eyepiece lens.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Why does the specimen need to be very thin?

A

So that light is able to travel through it.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why might a coloured dye be added to the specimen?

A

To stain it to make it easier to see.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

On what part of a microscope is the slide placed?

A

The stage.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How is the total magnification of the image calculated?

A

Total magnification = eyepiece lens magnification x objective lens magnification

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the components of a plant cell?

A

Cell membrane, cell wall, cytoplasm, nucleus, mitochondria, chloroplast, vacuole.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the components of an animal cell?

A

Cell membrane, cytoplasm, nucleus, mitochondria.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What three components of a plant cell are not present in an animal cell?

A

Cell wall, chloroplast, vacuole.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Cell membrane

A

Controls what comes into and out of the cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Nucleus

A

Controls the cell and contains genetic material.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Mitochondria

A

This is where respiration happens – release energy for the cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Cytoplasm

A

Where most of the chemical reactions take place.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Cell wall

A

Is rigid so it strengthens the cell.

18
Q

Chloroplast

A

This is where food is made for the plant by photosynthesis.

19
Q

Vacuole

A

Contains a watery liquid called cell sap that keeps the cell firm.

20
Q

What is the function of a nerve cell?

A

To carry electrical messages around the body.

21
Q

Describe how the nerve cell is specialised to perform its function:

A

It is long, thin and has connections at each end.

22
Q

Explain how a nerve cell is specialised to perform its function:

A

Long – to allow messages to travel to different parts of the body
Connections – to connect with other nerve cells to pass messages on.

23
Q

What is the function of a red blood cell?

A

To transport oxygen around the body to all cells.

24
Q

Describe how the red blood cell is specialised to perform its function:

A

It contains haemoglobin, has no nucleus and has a disk-like shape.

25
Q

Explain how a red blood cell is specialised to perform its function:

A

Haemoglobin – oxygen joins to this chemical inside the cell
No nucleus – more space for haemoglobin
Disk-like shape – Increases surface area for carrying oxygen.

26
Q

What is the function of a sperm cell?

A

To carry male genetic material to the egg cell.

27
Q

Describe how the sperm cell is specialised to perform its function:

A

Has a long tail
Has a streamlined head
Contains lots of mitochondria

28
Q

Explain how a sperm cell is specialised to perform its function:

A

Tail – allows it to swim towards the egg
Streamlined head – allows it to move faster
Lots of mitochondria – to release lots of energy for moving.

29
Q

What is the function of a leaf cell?

A

To make food for the plant by photosynthesis.

30
Q

Describe how the leaf cell is specialised to perform its function:

A

Contain lots of chloroplasts.

31
Q

Explain how a leaf cell is specialised to perform its function:

A

Lots of chloroplasts – to absorb more energy to carry out photosynthesis.

32
Q

What is the function of a root hair cell?

A

To absorb water and nutrients from the soil.

33
Q

Describe how the root hair cell is specialised to perform its function:

A

Has a long, thin root hair

Do not contain chloroplasts

34
Q

Explain how a root hair cell is specialised to perform its function:

A

Root hair – Creates a larger surface area to allow more water to enter the cell.
No chloroplasts – There is no light underground so photosynthesis will not happen in the cell.

35
Q

Name two unicellular organisms:

A

Amoeba and euglena

36
Q

Name the components of an amoeba:

A

Cell membrane, cytoplasm, nucleus.

37
Q

How does an amoeba move?

A

By changing the shape of its body.

38
Q

Name the components of an euglena:

A

Cell membrane, cytoplasm, nucleus, chloroplasts, eyespot and flagellum.

39
Q

How does an euglena move?

A

The flagellum spins allowing it to move.

40
Q

How does an amoeba and euglena reproduce?

A

By binary fission: it splits itself into two cells.

Core Questions (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions