Biochemistry - Introduction to cell biology

Question 1

What are the 4 types of phospholipids?

Answer 1

Phosphatidylcholine with functional group = CH2CH2C+(NH3)3

Phosphatidylethanolamine with functional group = CH2CH2NH3

Phosphatidylserine with functional group = CH(COO-)NH3+

Phosphatidylinistol with functional group = cyclic sugar ring

Question 2

What do phospholipids do in aqueous solution?

Answer 2

Phospholipids spontaneously form micelles (globules) in aqueous solution
Fatty acid component in the middle phosphate component outer surface
Phospholipids can form a Bilayered sheet (found on cell membranes)

Question 3

What are prokaryotes?

Answer 3

Single celled organisms, devoid of a nucleus or any membrane bound organelles (Bacteria)
Increase in Bacteria leads to Caries/Periodontal disease
In prokaryotes Transcription + Translation occur simultaneously
Has no membrane bond nucleus s tRNA + mRNA is free to move about