What physical factor can denature or alter a proteins structure ...

[ts19998]

What physical factor can denature or alter a proteins structure in a cell?
  a. Phosphorus
  b. Nitrogen
  c. Light
  d. Salinity

Question 2

What can increase the variation of genetic traits in a population?
  a. Mutations
  b. Adaptations
  c. Natural selection
  d. All of these choices

[wergv]

Answer to Question 1

ANS: D
The concentration of salt can damage cell walls and alter proteins. There can be large variations on the
surface salinity. Information can be found in the section Marine Life Success Depends upon Physical
and Biological Environmental Factors.

Answer to Question 2

ANS: A
Mutations are a way to add new genetic variation into a population. They are a random alteration in an
individual's genes. Most mutations are not favorable. Information can be found in the section The
Concept of Evolution Helps Explain Life in the Ocean.