Answer:
Myelin sheaths refer to the covering of fatty tissue, which safeguards the nerve cells. These cells are the components of CNS that conduct messages back and forth between the brain and the remaining parts of the body.
The majority of the nerve fibers are enveloped by an insulating, fatty sheath known as myelin that functions to accelerate the impulses. The myelin sheath comprises periodic breaks known as nodes of Ranvier. Hopping from nodes to nodes, the impulse can pass much more briskly than if it had to move along the whole length of the nerve fiber.
Answer:
Option B, kinesthesia
Explanation:
Kinesthesia is also known as Kinesthesis. It is the study of determining both the conscious and unconscious owns' body movements through perception . It makes an individual able to find the change in the position and movement of the body without depending on information from sense organs. However, the senses received from the sensors located in tendons, joints, and muscles also helps us in perceiving this information.
Hence, option B is correct.
Answer:
D. 1 in a trillion bases
Explanation:
A mutagen agent can change the genetic information of organisms increasing mutations over the natural level. Mutagens cause changes in the bases, and pairing bases, that compose DNI strands.
A mistake in the process of DNI copy during cell division might cause genetic changes in daughter cells. Defects DNI replication might be inherited if it occurs in germinal cells. But it can also cause many significant epigenetic changes.
Many of these changes can be detected on time by enzymes such as DNI polymerase. This enzyme can correct these mistakes or at least some of them, moving from 3´to 5´direction, and eliminating the mistakes.
The highly effective replication system, together with the action of enzymes, makes it rare to occur a mistake in DNI replication. Generally speaking, the mistaken rates in DNI replication are very low, meaning that only one in a trillion times occurs a mistaken DNI copy.
The Richter scale is used to measure the amount of seismic energy released by an earthquake.
Answer:
C. Models
Explanation:
Ive seen this is multiple quizlets, and its been asked and answered by others on the website :)