Answer:
most enzymes' optimum pH is neutral or close to neutral, like amylase found in saliva, which has an optimal pH = 6.8. Some enzymes prefer a more drastic pH, like pepsin, which can have an optimum pH of 1.7 to 2. Sometimes enzyme pH optima depends on where the enzyme is found.
The answers are DNA and Nucleus
What video, i can help more if you can show me the video
Answer:
I think it is D
Explanation:
A- That is a random gene mutation and is not natural selection
B- A lizard sitting under the shade isn't selecting anything
C- that would be sexual selection
D- bacteria becomes resistant because of natural selection.
Hope this helps :)
