What codes for proteins?

a: polypeptides
b: dna
c: amino acids
d: rna

3points hurry! what is the relationship between biotechnology, sharkskin, and disease resistance? bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it. disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks. scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease. sharkskin produces many chemicals that can be collected and used to create antibiotics.

What is the approximate time of death of the body temperature is 29.4 degrees celsius

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm