Cell And Organelles

Question 1

What are the differences in prokaryotes compared to prokaryotes?

Answer 1

No nucleus - naked circular DNA
Cell wall
Lack most organelles (no microtubules)
All biochemical processes occur in the same compartment

Question 2

State 5 functions of the plasma membrane

Answer 2

Selective permeability 
Transport of materials along cell surface 
Endo/exocytosis
Intercellular recognition 
Signal transduction 
Maintains cell morphology

Question 3

What are some of the main functions of ER?

Answer 3

Lipid biosynthesis
Steroidogenesis
Membrane synthesis

Question 4

What side of the Golgi to proteins enter?

Answer 4

Enter at cis face

Leave at trans face

Question 5

What are the main functions of the Golgi?

Answer 5

Modify, sort, concentrate and package proteins synthesised in RER into secretory vesicles

Question 6

What is the function of peroxisomes?

Answer 6

To detoxify (oxidise) a number of molecules (alcohols, phenols, formaldehyde etc)

Question 7

What’s the function of mitochondria?

Answer 7

Primary site of energy production through oxidative phosphorylation - produces ATP

Question 8

Metabolism of what occurs in the cytoplasm?

Answer 8

Amino acids, nucleotides and carbohydrates

Question 9

What is the standard ph of blood plasma?

Answer 9

7.4

Question 10

Which areas of the body are abundant in SER?

Answer 10

Liver, mammary glands, ovaries, testes and adrenal glands