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ElenaW [278]
3 years ago
5

What is the posterior and anterior opening of the digestive tract called?

Biology
1 answer:
Alla [95]3 years ago
6 0
I think its the anus 
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Hunter-Best [27]
On the planet earth. They exist in what we call the "world", which holds all seen life.
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Which symptom is unique to amyotrophic lateral sclerosis (als) and is not observed in multiple sclerosis (ms)?
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Read 2 more answers
The diagram below shows the chemical structure of a type of lipid molecule called a phospholipid.
SVEN [57.7K]

Answer No 1:

Phospholipids are made up of phosphorus head and two fatty acid molecules.  These phosphorus head and fatty acid tail is joined together by glycerol. Fatty acid molecules are made up of Carbon, hydrogen and oxyge. Hence,carbon and hydrogen can be said as two other elements present in phospholipids.

Answer No 2:

The building blocks of lipids are glycerol and fatty acids.

Lipids can be described as vital organic molecules which are not soluble in water. They are made up of chains of carbon, hydrogen and oxygen. Someof the examples of lipids are fats and oils. Lipids are the main molecules present in an organisms cell membrane and hence have huge biological importance.

Answer No 3:

Lipids are biologically important molecules as they play very vital roles in the functioning of an organisms body. Two of the functions of lipids are:

  • Lipids and phosphorus molecules combine to form phospholipids. The phospholipids are the main molecules out of which the cell membrane is made. Hence, lipids play an essential role in providing the cell membrane its structure.
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6 0
3 years ago
What does the B cell do that makes it so important?
n200080 [17]

Here, you go:

Answer:

<u><em>Generation of B Cells. The immune system is remarkable for its ability to respond to a great many antigens.</em></u>

Explanation:

<u><em>These cells make antibodies which defends and fights out viruses in our bodies.</em></u>

<u><em></em></u>

<em>~Hope This Helps~</em>

6 0
3 years ago
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