Answer:
A <u><em>receptor</em></u> is a protein that recognizes and responds to a signal.
Explanation:
A receptor is a protein molecule present on the cells on which the signalling molecules can bind and generate a physiological response. Some receptor molecules can also respond to Sun and light. Each type of cell has specific receptors molecules and hence can respond to specific signals. The receptor molecules hence tend to receive signals for a cell. Molecules such as hormones bind to the receptors.
It is Chromosomes
Meaning: Chromosomes is a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes
Muscles and organs derive the most benefit from the blood that flows in the arteries and capillaries because they obtain food substances and oxygen while releasing wastes.
They're both types of active transport that are the intake of something into a cell. Khan Academy has a great article on this. I recommend checking that out.
Patterns. ...
Cause and effect: Mechanism and explanation. ...
Scale, proportion, and quantity. ...
Systems and system models. ...
Energy and matter: Flows, cycles, and conservation. ...
Structure and function. ...
Stability and change.
I wanna say the answer is cause and effect
