1.2 Ultrastructure of cells

Question 1

Endoplasmic reticulum

Answer 1

Smooth

• Synthesis of lipids and steroids
• Metabolism of carbohydrates
• Drug detoxification (liver cells)
• Regulation of calcium levels (Muscle cells)

Rough

• Has ribosomes, butnot permanent, picks up and drops them off

Question 2

Microscopes

Answer 2

Compound microscope - >0.2 micrometres

Transmission Electron microscope - See inside structure of the cell

Scanning electron microscope - Shows 3D image of surface of specimens

Nanolive 3D microscope - Shows 3D shape, can see cells moving, can measure volume of cell

Question 3

Eukareotes

Answer 3

4 kingdoms (protista, fungi, Plantae, Animalia)

Contain complex structures enclosed within membranes

Question 4

Prokaryotes

Answer 4

2 domains - Eubacteria & Archaea (belong to monera)

No nucleus or any other membrane bound organelles

Divide by binary fusion (Copy DNA and split to duplicate)

Question 5

Prokaryote structure

Answer 5

Question 6

Eukareotic structure

Answer 6

Question 7

Panceas cells

Answer 7

Produce enzymes to go into the small intestines to break down food and gain nutrients

Contain heaps of ER to produce lots of enzymes

Question 8

Leaf Palisade cell structure

Answer 8

Question 9

Leaf cellular structure

Answer 9