Cells and simple cell transport Flashcards Preview

AQA Additional Biology > Cells and simple cell transport > Flashcards

Flashcards in Cells and simple cell transport Deck (18)
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1
Q

Do animal cells have a cell wall?

A

No, the outside of an animal cell is the cell membrane

2
Q

What do most plant cells have that most animal cells do not?

A

Cell wall, large permanent vacuole, and chloroplasts

3
Q

What is the plant cell wall made from?

A

Cellulose

4
Q

Where is the DNA found in a cell?

A

In the nucleus

5
Q

What are ribosomes involved in?

A

Protein synthesis

6
Q

Does a yeast cell have chloroplasts?

A

No

7
Q

Why do sperm cells need a lot of mitochondria?

A

To release the energy for movement

8
Q

What is diffusion?

A

The movement of particles from a place where they are in high concentration to a place where they are in low concentration

9
Q

What are flagella involved in?

A

Movement

10
Q

What are plasmids?

A

Rings of DNA

11
Q

Why can’t you find mitochondria inside bacteria?

A

They are about the same size

12
Q

What affects the rate of diffusion?

A

Difference in concentration Temperature Surface area Diffusion distance

13
Q

Which part of a cell allows substances to enter and leave?

A

The cell membrane

14
Q

How are palisade cells adapted for photosynthesis? ( 2 marks)

A

Any 2 from: Packed with chloroplasts Grouped together near the surface Tall with long sides

15
Q

What is this?

A

Yeast a single celled fungus

16
Q

What is this?

A

A bacterium

17
Q

What does this diagram show?

A

Simple diffusion

18
Q

What is this and what happens here?

A

It is a mitochondrion and respiration takes place here