When a man and a women come together it is called sexual reproduction.
(had to keep it pg for the kids)
its necessary to keep the generations of humans alive. if this doesn't happen the human race will be no more.
There are all kinds of people who have different kinds of kids(skin color and features)
Answer:
Explanation:
There are some signs and symptoms that a person may exhibit if they are in pain that can clue you in:
Facial grimacing or a frown.
Writhing or constant shifting in bed.
Moaning, groaning, or whimpering.
Restlessness and agitation.
Appearing uneasy and tense, perhaps drawing their legs up or kicking.
The 3rd,4th, and 5th are correct.
Answer:
The CTL has specific receptors that can recognize infected or damaged cells.
Explanation:
The cytotoxic T cells (CTL) is a type of white blood cells that specifically helps in destroying virus-infected cells (also damaged cells and cancer cells).
This type of cells has a special receptor called T-cells receptors (TCR) which ones recognize specific antigens (molecule that stimulate the immune systems because are “strange” to them). Virus inside a cell could bind to a special molecule called class I MHC, this molecule moves the virus to the surface of the cell where it can be recognized by a CD8+ specific antigen-receptor of the CTL.
