Which of the following steps in a signaling pathway typically occurs first once a chemical messenger reaches a target cell? A Specific genes are activated.
B
A second messenger molecule is produced.
с
A ligand binds to a receptor.
D
Specific proteins are synthesized.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

Apair of fruit flies reproduces and has 1,000 offspring. all 1,000 of the offspring have the alleles gg. what is the most likely combination of alleles for each parent

The equation shows cellular respiration. during cellular respiration, glucose combines with oxygen to form carbon dioxide, water, and atp. what happens to the energy in the bonds in glucose? the energy is transferred to oxygen. the energy is transferred to carbon dioxide. the energy is transferred to water. the energy is transferred to atp.