Answer:
The valves' main job is to keep the blood moving in one direction – back up towards the heart. When the valve is open, blood freely flows upward towards the heart and when the valves are closed, blood cannot flow back
The cell in the stomata. The cell is called the mesophyll which can be broken down in two layers the palisade layer and the spongy layer.
Adenosine triphosphate (ATP) is referred to as the energy currency of the cell and is used to carry fuel for cellular work.
i'm pretty sure this is <em>false</em>
Answer:
D
Explanation:
the peptides produced by this sequence are turned into proteins