D. In brief, when the nerve impulses reached the axon terminal, it will stimulate the vesicle in the axon terminal to release neurotransmitters and bind with the receptor located on the surface of the dendron in another nerve fiber/ the receptors on muscle(I.e. skeletal muscle)
Answer:
c
Explanation:
The correct answer would be that the nervous system transmits feelings of hunger to the brain, which initiates eating.
<em>The human stomach and intestinal tracts consist of receptors that are able to sense the presence or absence of nutrients and send messages to the brain accordingly. If there are adequate nutrients in the stomach and the intestinal tracts, the receptors send a message to the brain and the hormone that makes humans feel fullness in their stomach is released into the blood. Once the available nutrient is low, the receptors send a message to the brain which in turn releases hormones into the blood that makes humans feel the sensation of hunger. </em>
The correct option is c.
Answer: D. cellular respiration
Explanation:
Cellular respiration is a process which involves the break down of glucose molecules into water and carbon dioxide present in the food so as to release energy in the body in the form of ATP and also releases wastes.
The fish being a consumer in the food chain will eat algae as a food source. The cellular respiration process in fish will break down the glucose molecules in the algal food and will provide energy to the fish.
Our skin cells divide rapidly in order to maintain a protective barrier against infection.The outer skin layer is called the epidermis and contains mostly dead cells that contain keratin.Keratin is a tough fibrous protein found in hair,skin and calluses and acts as a protective coating.The epidermis cells are constantly undergoing mitosis so the outer dead cells containing keratin are rapidly replaced as they fall off, which occurs after so many days.Then the newer living cells start producing keratin,lose their cellular contents,then die and the cycle goes on.The skin acts as a barrier to infection,therefore,it's constantly renewed and repaired.
