If all receptor proteins were removed from hepatocytes' (liver cells') membranes, then the liver would no longer respond to hormones. This would be catastrophic to the metabolism, because the liver could no longer process nutrients such as glucose. Such a malady would prove fatal when not eating, because the lack of glycogen, cortisol, epinephrine (and other hyperglycemic hormones) woukd lead to hypoglycemic shock, coma, and death.
Answer: B. Are found in organisms of the same species.
Homologous structures are body parts that are alike because the species in question share a common ancestor.
Answer:
the genetic code is being carried by the Dna molecules, which is in most organisms
Answer:
The theory of natural selection was proposed by Charles Darwin, which states the mechanism of biological evolution by explaining <u>adaptation and speciation.</u> There was five observation of the theory of natural selection.
1) The population produces more offspring than there are adults, in each generation.
2) The population does not continue to grow in size.
3) Food and many other resources are limited.
These three observations interfere that individuals compete for resources within a population.
4) Individuals within all populations vary.
5) Many variations are heritable.
He also assumed from these two observations that individuals inherit some characteristics that give a better chance of surviving and reproducing.
These observations and interpretations helped him to propose the theory of natural selection. The theory tells the <u>heritable characteristics in a population change over time</u> <u>become more adapted in generation after generations.</u>
