The answer is the first choice:
Negative feedback reverses a change in a variable that has moved outside of its normal range, whereas positive feedback strengthens it.
Feedback loops do not only apply to blood pressure. There are many examples from body temperature regulation to child birth to your AC unit at home.
In the light reactions, H2O goes in, and O2 goes out.
The answer should be the third option "number of protons and neutrons." The atomic mass of a element is equal to the amount of protons, and neutrons added together in that element. So for example if we are trying to find the atomic mass of hydrogen you would add the total amount of protons and neutrons together to find it's mass although it doesn't equal the exact amount of it's mass but it's close.
Hope this helps.
Answer:
Knew about zebra element, thought there were no separable stipe cis-elements
Applied stubbs to a larger domain, upstream and downstream
Found separate stripe elements using same method
Answer:
All living cells contain ribosomes, tiny organelles composed of approximately 60 percent RNA and 40 percent protein
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