Sickle hemoglobin mutation is a point mutation, bases are substitued from one another
<span>Answer:
outside cell:
[Na+] high
[glucose] low
transporter: glucose and Na+ go down
inside cell:
[Na+] low
[glucose] high
1. Na+ moves down its electrochemical gradient.
2. Glucose moves against its concentration gradient.</span>
Answer: D. Heat
Explanation : Water Vapor is a source of warmth, since the heat that is radiated from Earth is absorbed by the water vapor. This is why greenhouses use water vapor as well.