Explanation:
For question no 19
Force (F) = 20N
distance (d) = 5m
Work = F * d
= 20 * 5
= 100 J
Now
For question no 20
D. No matter how much force is applied the object must have motion for work to be done.
The correct term to fill in the blank would be peripheral. The two major divisions of the nervous system are the central and the peripheral nervous systems. The central nervous system consists of the spinal cord and the brain. The peripheral nervous system is made up of nerves and small amount of gray matter known as the ganglia. The nervous system is a very important part of the body as it is responsible of connecting all of the organs and the parts to the brain. It is responsible for carrying messages to the brain and out from the brain to the other parts of the body.
What part did you need help understanding? Your definition is pretty strong- the epiglottis keeps food from entering the trachea and lungs. It also opens during breathing to allow air into the lungs. Good luck on your test, let me know if you need anymore refreshers!
Mendel used the garden pea to determine the inheritance of traits.
It is translation. Transcription is from DNA to RNA and Translation is from RNA to proteins
