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Doss [256]
3 years ago
7

When a few intracellular mediator molecules activate several enzymes, and each of these activated enzymes activate still other e

nzymes, the hormone has initiated Select one: a. a cascade effect. b. a double loop effect. c. a protein kinase effect. d. a cyclic effect. e. a negative feedback cycle.
Biology
1 answer:
solmaris [256]3 years ago
8 0

Answer:  a. a cascade effect.

Explanation:

Hormones are the chemicals which are secreted by the glands and tissues of the body. These hormones are transferred into the circulatory system of the body where they are targeted to the tissues for regulating their actions. Some hormones regulate the secretion of other hormones in the body this is called as cascade effect. This cascading effect can be seen at the enzymatic level the activation of one enzyme causes the activation of other enzymes regulated by the hormonal control.

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How can you see change over time using topographic maps and satellite images?
Alexus [3.1K]

Topographic maps and satellite images

Explanation:

A topographic map represents earth's surface features like land forms and structures, rivers and lakes, mountains and hills, elevations and other natural features along with man-made artificial features like cities, buildings, monuments, roads, bridges etc. These are formed by contour lines.

Topographic maps are printed with revision dates to observe the changes happening on the Earth's surface. Various land forms keeps changing due to natural and man-made causes and these needs to be updated accordingly to provide accurate details.

A satellite image provides details of the earth aerially from space. These provides details of a land form or any earth structure currently.

By comparing with older satellite images or topographic maps with the current one, the changes which occurred over time can be observed.

3 0
3 years ago
What are the pores in a leaf called and what is their purpose
Katyanochek1 [597]

Answer: Helps the plant breathe: The epidermis of the leaf contains guard cells that control and regulate the small pores on the undersurface of the leaves. These pores are called stomata. Stomata are responsible for regulating water in and out of the cell. It is also responsible for the exchange of gases across the epidermis.

8 0
3 years ago
Read 2 more answers
2 Points
alina1380 [7]

Answer:

The answer is:

B. Worms consuming the blood from mammals.

Algae isn't causing any harm to the sloth, rather its providing it with camouflage to hide from predators. Both creatures benefits since the algae gets to eat any parasites and other things in the sloths fur, plus they get a free ride and home in the process. The sloth isn't harmed and is helped by the algae since it provides camouflage (mutualism).

Tree frogs aren't causing harm to the trees since they are only using them to hide from predators, the tree serves as protection for the frogs and aren't harmed in the process (commensalism).

Two fish protecting each other from predators aren't harming each other in any way, rather they are protecting each other from another animal that wants to eat them (mutualism).

The worms however are harming the mammals because they are consuming the mammals blood, this is parasitism since one animal is benefiting and the other is harmed.

Hope this helps! :)

8 0
3 years ago
What does excretion mean in science?
Dovator [93]
It means, process of eliminating waste matter..
3 0
3 years ago
Name one example of an enzyme in the human body and it's function.
Art [367]

Answer:

A couple of examples

<u>amylase</u>: break down starch into sugar.

<u>protease</u>: break down proteins into amino acids.

<u>lipase</u>: break down lipids (fats and oils) into fatty acids and glycerol.

3 0
3 years ago
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