Structures Internal to cell wall

Question 1

What are the functions of plasma membrane?

Answer 1

Selective permeability
Contains enzymes for ATP production

Question 1

Plasma Membrane facts

Answer 1

Is a phospholipid bilayer that encloses cytoplasm
Has peripheral proteins on membrane surface
Integral and transmembrane proteins penetrate the membrane

Question 2

What can cause damage to plasma membrane?

Answer 2

Alcohols, detergents, polymyxin antibiotics

All these cause leakage of cell components

Question 3

What is the cytoplasm and what is it made of?

Answer 3

Substance inside plasma membrane

80% is water plus proteins, carbs, lipids, and ions

Question 4

What is part of Nucleoid?

Answer 4

Bacterial chromosome
Plasmids

Question 5

What are bacterial chromosomes?

Answer 5

Circular threads of DNA that contain cells genetic information

Question 6

What are plasmids?

Answer 6

Extrachromosomal genetic elements that carry non crucial genes (antibiotic resistance, production of toxins, etc)

Question 7

What are ribosomes?

Answer 7

They are sites of protein synthesis
Found in cytoplasm of prokaryotic cell
Made of protein and ribosomal RNA

Question 8

How many Svedberg units does prokaryotic ribosome have?

Answer 8

70s

50 large and 30 small to give 70

Question 9

Endospore facts

Answer 9

Produced when nutrients are depleted
Resistent to dessication, heat, radiation and chemicals
Produced by Bacilus and Clostridium

Question 10

What is sporulation?

Answer 10

Endospore formation

Question 11

What is germination?

Answer 11

Endospore returns to vegetative state