Answer:
The correct statement about the hemoglobin and myoglobin is as follows:
1. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind only one oxygen molecule.
3. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.
4. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.
5. Heme is composed of an organic protoporphyrin component and a metal atom.
6. Each iron atom can form six coordination bonds: One of these bonds is formed between iron and oxygen.
Answer:
A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene.
C, because alleles are alternative forms of a gene that arise from mutation.
You are in the forest and see a large, snarling, drooling grizzly bear running directly toward you. The adrenaline rush you feel as you run toward the cabin is controlled by the sympathetic nervous system.
The sympathetic nervous system is a part of the autonomic nervous system which functions through various interconnected neurons. The sympathetic nervous system’s main role is to stimulate the neuronal and hormonal stress response (also known as body's fight-or-flight response). The sympathetic fibers in the adrenal medulla (inner part of the adrenal gland) produce acetylcholine (a neurotransmitter), which allow the high secretion of adrenaline and low amounts of noradrenaline from it. The sympathetic nervous system also prepares the body for action, especially in situations that are dangerous to survival.
