Answer:
A) they help transport some substances through the membrane.
Explanation:
The membrane proteins that span the bilayer of phospholipids help in the transport of polar, large and charged substances across the membrane. The nonpolar core of the membrane does not allow these charged and polar substances to pass through. Proteins serving as channels form pores to allow movement of the specific substances.
On the other hand, carrier transport proteins of the membrane bind to the substances present at one side of the membrane and deliver them to the opposite side.
Answer:
The offspring are genetically distinct from the parents because they are produced by sexual reproduction. -C.
1. A
2. D????
3. C?
4. B
5. A????
Answer:
A
Explanation:
technology has made it easier for people to get the nutrients they need through food. Better agriculture means that people don't have to hunt for food or out themselves in danger in order to get food. Clean water has lowered the risks of catching diseases that were in the water.
