The movement of substances (as by diffusion) across a cell membrane without the expenditure of energy.
Explanation:
Hey there!
- The main function of cell is to <u>make</u><u> </u><u>a</u><u> </u><u>life</u><u> </u><u>possible</u><u> </u><u>in</u><u> </u><u>the</u><u> </u><u>universe</u><u> </u><u>by</u><u> </u><u>performing</u><u> </u><u>various</u><u> </u><u>type</u><u> </u><u>of</u><u> </u><u>vital</u><u> </u><u>activities</u><u>. </u>
- Various type of cell performes various type of activities. The same type of cell combine together to form tissue. Similarly, similar tissue combine and form organ. Now, Organs combinly form form a system and all system form a whole body. They combinly perform task for sustaining life in the universe.
- <u>Cancer</u><u> </u>are caused mainly due to abnormal growth of cells. It shows various type of symptoms. Such as;
- The wounds donot heal faster, instead it may be worse.
- Unwanted bleeding may occur from nose, mouth, or other parts.
- You may see lump in some parts of body.(Thickness of skin).
- They also may have problem of hair loss in more amount.
<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
A is the answer hope i helped
A person with darker skin produces more melanin. Those are the dark brown pigments that come from your skin, hair, or eye color.
Hope that helps. -UF aka Nadia
