Steroids are a major class of. a Lipids
b Proteins
c Vitamins
d None of the above

D

Explanation:

Additional classes of steroids include:  

Neurosteroids such as DHEA and allopregnanolone

Aminosteroid neuromuscular blocking agents such as pancuronium bromide

the backbone of the dna and rna compound is sugar phosphate.

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.