Answer:
The angular acceleration of the centrifuge is -231.74 rad/s².
Explanation:
Given that,
Angular speed = 3500 rev/min = 366 rad/s
We need to calculate the angular displacement
Using formula of angular displacement
Put the value into the formula
We need to calculate the angular acceleration
Using equation of motion
Hence, The angular acceleration of the centrifuge is -231.74 rad/s².
Answer:
Option A
Mutation led to increased genetic variation.
Explanation:
From the definition of mutation, it’s a sudden change in the deoxyribonucleic acid (DNA) which tends to alter the genetic message carried by that gene. Mutation is caused by a mutagen where for the case of Chernobyl, USSR (now Ukraine), the mutagen was radiation. Consequently, variations would occur in organisms that inhabited that area. However, it’s important to note that mutation can’t fix new alleles. Neither will mutation cause genetic drift and decreased fitness nor cause changes only in the physiology of an organism as depicted by the other choices. Finally, it’s important to recognize that mutations can increase genetic variation hence option A is the correct answer for this incidence.
2. Wounded skin heals by forming a scab.
Explanation:
One of the choices that shows an example of how a living thing maintains its structure is that of a wounded skin healing by forming a scab.
- When a wound heats structure of an organism is maintained.
- The part lost is replaced.
- This way all the body part will still continue to function properly and well.
- Healing occurs when the body forms new tissues to replace the damaged ones.
- Collagens which are protein fibers are used for this process.
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Injury treatment brainly.com/question/5472000
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