An organism that regulates its temperature internally. An organism that uses external sources of heat to regulate its temperature.
An organism whose internal temperature may vary considerably.
An organism that maintains a constant internal temperature.
A. endotherm
B. homeotherm
C. ectotherm
D. poikilotherm

Final answer:

Without enzymes, the body couldn't perform essential chemical reactions quickly enough to sustain life. Enzymes also aid digestion and help in immune defence. Their absence would critically interrupt bodily functions and overall health.

Explanation:

If there were no enzymes in the human body, many essential biological processes would be negatively impacted. Enzymes act as biological catalysts, speeding up the chemical reactions that occur within cells, thereby allowing life-sustaining processes to occur at the rate necessary for life. If we didn't have enzymes, these reactions would happen too slowly to sustain life, or might not happen at all.

Enzymes are vital in breaking down food and converting it into usable energy. Without enzymes, our digestive system would not be able to efficiently break down nutrients, leading to malnutrition and energy deficiency. Moreover, enzymes are involved in the immune system's defence mechanisms. They assist in the destruction of foreign pathogens, thus protecting the body from infections.

Furthermore, each cell's enzyme demand changes according to its needs and role within the body. For instance, the enzymes necessary in stomach cells differ from those in skin, blood, or nerve cells reflecting the diverse functions enzymes perform in the human body.

Overall, without enzymes, the human body would be unable to function properly. They are essential for our survival, and their absence would dramatically alter the way our bodily systems operate.

Learn more about Enzymes here:

brainly.com/question/31561117

#SPJ12

I believe the answers are

- often can't be treated

- can be prevented with immunization

- can be treated with antibiotics

Answer:

A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water known as a shelf sea. Much of these shelves has been exposed during glacial periods and interglacial periods. The shelf surrounding an island is known as an insular shelf.

Explanation:

Answer:

t

Explanation:

Answer:

An earthquake

Explanation:

An earthquake is caused when plates move around and clash.