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.
Answer:
aksum
Explanation:
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<span>Infants grow about 3/4 inch per month during the first year, increasing their birth length by about 40 percent by their first birthday. Thus, the answer to the question is 3/4 inch during the first year upon giving birth of the mother.</span>
Answer:
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The correct answer is: B) a greater variety of species present allows more organisms to adapt after changes occur
Biodiversity refers to variation at the different levels: genetic, the species, the ecosystem.
When there is high biodiversity in an ecosystem this means that there is a great variety of genes and species in that ecosystem. Ecosystem with such variety is capable to carry out natural processes and to adapt to changes that occur (there will be more species involved in food webs, more plants included in biogeochemical cycles and more genes available for succession and evolution).