Question

If animals could not make fats, which of the following could take over some of the role that fats play?

A. RNA

B. Glycon

C. cellulose

d. DNA

Which of the following would be most likely to diffuse across the phospholipid bilayer of a biological membrane without the help of a transport protein?

A. hexose sugar

b. nucleotide

c. a molecule of h2

d. an amino acid

Answer 1

Option ( c ) cellulose

Cellulose is a polysaccharide consist of chain of beta linked D-glucose units. In plants cell wall is make up of cellulose. When plants are eaten by animal,they consume cellulose. It transported in ruminal fluid , where microorganisms present in insgesta ferment the cellulose into fatty acid or other molecule. They absorb or utilize the energy

2 ) option (c ) molecule of h2

These are enough small molecule which easily diffusible through plasma membrane without anu transporter.