<span>An object to be considered alive must have these characteristics.
1. Acquire and uses energy.
2. contains genetic programme.
3. composed of one more cells.
4. Respiration.
5. Must be able to grow.
6. Must be able to reproduce.
7. Must have a metabolism.
8. Must be able to respond to its environment. 9. Must be made of cells.</span>
The difference in concentration between solutions on either side of a cell membrane is a concentration gradient.
In the field of biology, a concentration gradient can be described as a difference in the concentration of molecules inside and outside of a cell. It is due to concentration gradient that molecules move into and out of a cell through the cell membrane.
Some molecules move from an area of higher concentration gradient to an area of lower concentration along the concentration gradient. Diffusion is an example of such a process.
On the other hand, some molecules move from an area of lower concentration to an area of higher concentration against the concentration gradient. Active transport is an example of such a process.
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The pituitary gland, otherwise known as the hypophysis cerebri, is a small gland that is about the size of a pea. It’s
often called the “master gland” because it produces the hormones that stimulate the function of other endocrine
glands. It’s located at the base of the brain on the hypothalamus and is divided into two lobes—<u>anterior lobe and
</u>
<u>posterior lobe.
</u>
Answer:
A.
Explanation:
It shows a clear view of what a group of cells of a plant would be like.
