2.1 Cells Flashcards Preview

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Flashcards in 2.1 Cells Deck (15)
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1

Function of cell membrane?

Controls movement of substances

2

Function of cytoplasm?

Site of Chemical reactions (controlled by enzymes)

3

Function of mitochondria?

Site site of aerobic respiration (energy is released)

4

Function of Nucleus

Controls activities of the cells and contains genetic material

5

Function of ribosomes

Site of protein synthesis

6

Function of cell wall

Strengthens the cell or keeps it turgid. It is made up of cellulose (carbohydrate)

7

Function of chloroplasts

Absorbs light energy for photosynthesis. Some contain chlorophyll the green pigment

8

Function of vacuole?

Keeps the cell turgid (enlarged) and contains cell sap (sugary solution)

9

What does a bacteria cell have?

Cell membrane, cell wall, cytoplasm, ribosomes and sometimes flagellum (tail)
NO NUCLEUS
DNA in a plasmid

10

What does a fungi have?

Nucleus, cell membrane, cell wall, cytoplasm, mitochondria, ribosomes and vacuole

11

What does a yeast cell have?

Nucleus, cytoplasm, cell membrane and a cell wall

12

Name 4 specialised cells

Beta cell - creates insulin
Red blood cell - carries oxygen to body tissue
Phloem cell - Transportation of sugar
Xylem cell - Transportation of water and minerals

13

How do dissolved substances move in and out of cells?

Via Diffusion

14

Describe diffusion?

-The movement of spreading particles
-From a high area of concentration to a low area of concentration
-No additional energy required
-The greater the difference in concentration the faster the rate of diffusion

15

What substances pass through cell membranes via diffusion?

Oxygen, carbon dioxide, glucose, amino acids, water and nutrients