Answer:
regular meals provide your body with a constant supply of energy
Explanation:
C, it guarantees the survival of a species, for example there are a species of moth called the pepper moth, some of them are light and some of them are dark, where the pepper moths live has dark trees, the pepper moths that are lighter in color are likely to be eaten by birds because they are easier to see making the amount of light pepper moths scarce while the dark pepper moths live to breed and have offspring.
A. respond to the presence of autoinducer molecules
Answer:
1. Signaling molecule
2. Signaling receptors
Explanation:
Hormones, growth factors, neurotransmitters, etc. serve the function of signaling molecules for cells. These molecules are released by one cell and bind to the receptors present on/in the target cells to elicit the desired response. Thereby, the signaling molecules serve in cell-cell communication.
For example, insulin hormone synthesized and released from beta cells of pancreas binds to its cell surface receptors present on the surfaces of liver cells and muscle cells to stimulate the uptake of the glucose from the blood.
Likewise, neurotransmitters released from the presynaptic neuron bind to receptors present on the membrane of postsynaptic neuron and serve to carry the nerve impulse to the postsynaptic neuron.