Cells

Question 0

Lysosomes

Answer 0

Small spheres containing enzymes that breakdown proteins lipids and other things. Eg gets rid of waste

Question 1

Golgi Apparatus

Answer 1

Modifies and packages proteins for excretion from the cell

Question 2

Passive Transport

Answer 2

Diffusion (osmosis)

- simple or facilitated (protein channels)

Question 3

Active Transport

Answer 3

Endocytosis(pinocytosis - liquids. And phagocytosis - solids) - vesicle is formed. Fold of cell membrane around the substance which breaks off and passes through the membrane.

Ion pumps

Exocytosis getting rid of wastes

Question 4

Factors that effect speed of cell transport

Answer 4

Temperature
Concentration gradient
Type of chemical (polar or non polar)
Size of molecule
Alcohol - increases permeability
Thickness of membrane

Question 5

Metabolism

Answer 5

All the chemical reactions that occur in the body

Anabolic - build or add
Catabolic - break down

Question 6

Cell Membrance - Fluid Mosaic Model

Answer 6

Made up of phospholipid bi-layer -

phospholipid hydrophilic phosphate head.

Hydrophobic tail - glycerol and fatty acids

Question 7

Types of Proteins found on cell membrane

Answer 7

Glycoproteins-recognises other cells to form groups

Peripheral - sits inside or outside of membrane not inside

Receptor - recognises hormones

Integral - passes through whole membrane

Non-integral only passes through half

Question 8

Cell Respiration

Answer 8

Anaerobic - Glycolysis - cytoplasm
6 carbon chain broken into two halfs or pyruvate molecules. Produces 2 ATP

Aerobic(uses oxygen in mitochondria)
Krebs Cycle - complex series of catabolic reactions that produces an ATP per pyruvate plus CO2

Electron Transfer Chain - 36 ATP and H20

Overall Reaction
Glucose + Oxygen = carbon dioxide + water + energy