Answer:
Cells in a large multicellular organism communicate with each other by chemical signals. These signals are passed from one cell to another. To receive and respond to a chemical signal, a cell must have a <u><em>receptor</em></u> for that chemical.
Explanation:
To generate a physiological response, all cells in the body have special proteins called receptors. These receptors are involved in detecting a chemical signal and generating a response. The receptors are specific for different kind of chemical signals. For example, a dopamine receptor will bind a dopamine molecule whereas an insulin receptor will be able to bind an insulin molecule. Apart from chemical signals, some cells might also respond to mechanical signals.
Answer:I think it’s b I could be wrong
Explanation:
Answer:
Explanation:
Enzymes are proteins that act as catalysts. The shape of enzymes can be altered by changes
in pH or temperature. Explain how this change of shape affects the function of the enzyme.
Answer:
A police officer who allows select people to enter and leave a crime scene.
Explanation:
This job of a police officer best describes the selectively permeablity function of a cell membrane in which it allows the entrance of some selected substances whereas blocks the entrance of unwanted substances.
Hope this helps
Answer:
B
Explanation:
A: Bacteria also reproduce themselves aesexually
C: Sexual reproduction require sperm and egg.
D: Pencils and beds do not reproduce themselves.
