Answer: Mutation
Explanation:
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful. Sometimes, a mutation may even cause dramatic changes in the physiology of an affected organism. Of course, in order to better understand the varying effects of mutations, it is first necessary to understand what mutations are and how they occur.
Answer:
B. A narrow region of the superior vena cava could become blocked, restricting blood flow to the heart.
Explanation:
Answer:
-activation of glycogen phosphorylase
-activation of PKA (cAMP‑dependent protein kinase)
-conversion of ATP to cAMP
-activation of fructose 1,6‑bisphosphatase (FBPase‑1)
Explanation:
The binding of glucagon to its receptors affects the production of glucose in the liver. Once the glucagon receptors are activated, it leads to the activation of adenylate cyclase in which in turn increases the levels of cAMP (cyclic AMP) conversion from ATP. The increased level of cAMP then activates PKA (protein kinase A). PKA results in the phosphorylation of pyruvate kinase which results to the activation of fructose 1,6‑bisphosphatase (FBPase‑1) which results to decrease in glycolysis.
Furthermore, PKA activates phosphorylase kinase which results to the activation of glycogen phosphorylase and hence glycogenolysis. Glycogenolysis occurs when Glucose-1- phosphate is then released from glycogen. PKA also inhibits the action of glycogen synthase.
Explanation:
photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
a pigment is the natural colouring matter of animal or plant tissue.
a photon is a particle representing a quantum of light or other electromagnetic radiation. A photon carries energy proportional to the radiation frequency but has zero rest mass.
Answer:
greenhouse gases
Explanation:
all gases whose have three or more greenhouse gases :carbon dioxide (CO2), methane (CH4) and water vapor (H2O)
