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Lena [83]
3 years ago
9

3. The tails of a phospholipid molecule are said to be _________ or repel water molecules.

Biology
1 answer:
VARVARA [1.3K]3 years ago
4 0
Nonpolar because the the heads of the phospholipids are polar ]
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3. How many limbs do organisms in the order Gymnophiona have? 1: two 2: multiple pairs 3 : none​
vivado [14]

the organisms in the order Gymnophiona have no limbs. Option 3

<h3>What is Gymnophiona ?</h3>

Gymnophiona also  called Apoda, area known as one of the three major  orders of the class Amphibia.

Its members are known as caecilians which means “sightless” or “blind.”

Majority of the organisms in this group are limbless and wormlike amphibians that live underground in humid tropical regions throughout the world.

They are believed to have internal fertilization.

Their heads are blunt, and their skulls are bony and compact in nature.

Since they are limbless, they have no limbs

Thus, the organisms in the order Gymnophiona have no limbs. Option 3

Learn more about amphibians here:

brainly.com/question/27125398

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5 0
2 years ago
Enzymes are proteins that speed up reactions by
Korolek [52]
They lower the activation energy. The energy needed for a reaction to occur.

<span>ANSWER: lowering the amount of energy required.
</span>
BTW. The enzyme is a ferment conducting chemical reactions in living organisms. Each enzyme catalyzes a chemical reaction strictly defined for a specific substrate and conditions.
7 0
3 years ago
Read 2 more answers
A series of hollow organs joined in a long, twisting tube from the mouth to the anus.​
natita [175]

Answer:

The digestive system!

Explanation:

The digestive system is made up of the digestive tract - a series of hollow organs joined in a long, twisting tube from the mouth to the anus - and other organs that help the body break down and absorb food.

Organs that make up the digestive tract are the mouth, esophagus, stomach, small intestine, large intestine - also called the colon - rectum, and anus.

6 0
3 years ago
***
statuscvo [17]

Biological procession ?

6 0
2 years ago
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Living cells cannot use heat to provide the activation energy for biochemical reactions because ________. Which choice(s) comple
postnew [5]

Considering the following;

I. Heat is not readily available to all living cells.

II. Heat at excessive amounts denatures proteins.

III. Heat does not provide the activation energy for their reactions.

IV. When a critical temperature is reached, proteins no longer function

Answer;

I and IV

Explanation;

Living cells cannot use heat to provide the activation energy for biochemical reactions because heat is not readily available to all living cells and also when a critical temperature is reached, proteins no longer function.

Too much heat can kill an organism by rendering its organelles, cells, tissues and organs permanently inoperable and un-salvageable. The same process can be observed in tissues at low temperatures, and is the cause of frostbite. This is because enzymes are denatured by high temperature and inactivated by low.

7 0
3 years ago
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