Answer:
NAD is a coenzyme found in all cells. It consists of two nucleotides linked through their phosphate groups with a nucleotide that contains an adenosine ring and another that contains nicotinamide.
Explanation:
In metabolism, NAD participates in oxidation reduction reactions. This coenzyme is found in two forms in the cells: NAD and NADH. NAD accepts electrons from other molecules and is reduced, forming NADH, which you can use as a reducing agent to donate electrons. These electron transfer reactions are the main function of the NAD.
In living organisms, NAD can be synthesized from scratch from the amino acids tryptophan or aspartic acid. Some NADs are found in nicotinamide adenine dinucleotide phosphate (NADP), whose chemistry is similar to NAD, although it has different functions in metabolism.
Answer:
Insulin catalyzes the anabolic reaction.
Explanation:
Insulin and glucagon, while both are produced in the pancreas and regulate glucose concentration in blood, have opposite effects.
<u>An anabolic reaction consists of uniting smaller molecules in order to form bigger ones</u>. Insulin, in this case, sends a signal to stimulate the processes of glycogenesis and lipogenesis (both using glucose as a substrate to make bigger molecules).
Glucagon, on the contrary, catalyzes catabolic reactions: breaking glycogen molecules to obtain glucose (this process is called glycogenolysis).
Genetic drift
- initially from same species however due to natural circumstances some of the species relocates resulting in them evolving based in surroundings hence the process of natural selection; the survival of the fittest
Genetic bottleneck
- due to a natural disaster or crisis a species almost becomes no existent resulting in the remaining organisms of such species to repopulate resulting in only the fittest organisms of that species surviving hence once again the process of natural selection
The greatest way to explain natural selection is Darwin in the Galapagos island with the finches; Darwin studied these birds and discovered based on geographical location the same species of bird had evolved as identified by the change in beak structure in order to scavenge for food. The best way to explain it is the survival of the fittest same with long neck giraffes all the short neck giraffes died off due to them not being able to reach the leaves to eat
Answer:
I hope this helps.
Explanation:
Electrical energy flows into the toaster from a wire plugged into the domestic electricity supply. The electric current flows through a series of thin filaments connected together but spaced widely enough apart to toast the whole bread surface. The filaments are so thin that they glow red hot when the electricity flows through them. Like a series of small radiators, the filaments beam heat toward the bread in the toaster. The steady supply of heat rapidly cooks the bread. There are filaments on each wall of the toaster so the two sides of the bread cook at the same time.
The greatest concetration of public land is A. texas