Question

Please check P1&P2 & help with P3

P1.

A. DNA

B. Glycogen

C. Ribosome

D. miRNA

E1. Triacylglycerol

E2. Cyclic AMP

F. Acetyl CoA

G. Testosterone

H. ATP

I. Tau

1. Which molecules contain nucleotides? A, H, F, E2, D, C?

2. Which molecules contain at least one fatty acid? E1

3. Which molecules contain amino acids? I

4. Which molecules contain a sugar? A, B, H, E2, D, F

P2.

A. Phospholipid

B. Glycolipid

C. Cholesterol

D. None

1. Which molecules are amphipathic? A, B, C

2. Which molecules would decrease fluidity of plasma membrane? A?, B?, C

3. Which molecules are important for cell-cell recognition? B?

4. Which molecules are located solely on the intracellular surface of the plasma membrane, facing the cytosol? D

P3. 1. Describe where the following amino acids would be found in the glucose transporter (GLUT2) - part of the protein exposed to the lipid bilayer or within the interior of the transporter - and provide reasoning.

1A. Valine

1B. Serine

Acidic, basic, nonpolar, uncharged polar

2. Which amino acids form hydrogen bonds that shape tertiary structure?

3. Which amino acids allow transmembrane proteins to span the lipid bilayer?