I think plants in tundra lack vascular systems (xylem and phloem) because only simple (nonvascular) plants grow in tundra.
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Answer: its B
Explanation: I answered the same thing.
Answer:
I think it is...
A. Most people are not directly impacted by polluting a common.
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Answer:
Explanation:
Cancer is a disease of uncontrolled cellular growth. Your body has many mechanisms in place to prevent a cell from dividing uncontrollably. But when the DNA of a cell is mutated, the proteins that govern cell cycle activity can be changed, and a cell may be able to circumvent the body's mechanisms
Type 1 Diabetic here! I can help!! so basically the receptor for insulin is a large protein that binds to insulin and passes its message into the cell. It has several functional parts. Two copies of the protein chains come together on the outside of the cell to form the receptor site that binds to insulin.
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