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Ivenika [448]
3 years ago
10

Carbon dioxide molecules diffuse through cell membranes, but many other

Biology
1 answer:
Ray Of Light [21]3 years ago
3 0

Answer:

Semi-permeable membrane

Explanation:

In semi-permeable membranes, only some substances can pass through. Sometimes, some can also pass through the channel protein molecules or transport proteins on the cell membrane.

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The components that make up the genetic code are common to all organisms. If a segment of a gene contains 27 nucleotides, none o
AVprozaik [17]

Answer:

9 amino acids

Explanation:

A segment of a gene that has 27 nucleotides will code for<u> 9 amino acids.</u>

<em>Each codon on the gene potentially represents an amino acid and a codon is made up of 3 nucleotides each. Hence, in order to find out the total number of amino acids that a gene segment with 27 nucleotides can code for, the number of nucleotides should be divided by 3.</em>

    number of amino acids = number of nucleotides/3

                     27/3 = 9 codons/amino acids

3 0
2 years ago
We will now consider the secretions involved in fat digestion, including the organs that secrete or release them. review the lis
zhenek [66]
I cannot find the list of molecules and organs, but I gonna explain all existing lipid digestion.
First, you should know that triglycerides are not absorbable. The absorbable substances are free fatty acids, monoglycerides and cholesterol.

The main stages of lipid digestion:-Fat emulsification;
-Hydrolysis of lipids (by enzymes);
-Formation of micelles;
-Endocytosis of the micellar contents.

The enzymes responsible for lipid hydrolysis are:
lipases (pancreatic): secreted by the exocrine pancreas
colipase: secreted by the pancreas in an inactive form. Its role is to help the lipase in its activity.
cholesterol esterase: secreted by the pancreas too.
phospholipase A2: exists in the majority of the cells
4 0
3 years ago
What is a stem cell? a cell from which a new cell that has a specialized function is formed a mature egg cell that is capable of
Nady [450]
A stem cell is a body cell. Basically any cell that isnt used for reproduction i.e., gametes.
5 0
3 years ago
Read 2 more answers
The surface area of the small intestine is comparable to...
Pepsi [2]

The absorptive surface area of the small intestine is actually about 250 square meters (almost 2,700 square feet) – the size of a tennis court!

4 0
3 years ago
A _____ climate zone, near a high-pressure band, encompasses hot, desert climates.
Nataly [62]
That would be temperature. (:

Hope this helps! 
6 0
3 years ago
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