<span>Amino acids are the basic structural unit of all proteins. A 'free' amino acid (a single amino acid) always has:
an amino group -NH2,
a carboxyl group -COOH
a hydrogen -H
a chemical group or side chain -"R".
Since the amino acids (except glycine) have 4 different groups attached to the a-carbon, they are optically active stereoisomers (recall 23.101 Organic Chemistry) although only L-isomers are found in proteins.
At a neutral pH, both the amino and the carboxyl groups are ionised, giving what is termed the zwitterionic</span>
All cells must develop from other cells of the following is NOT part of the cell theory.
The correct option is D.
<h3>What is a cell?</h3>
The fundamental units of all living organisms are cells. There are many billions of cells in a human body. They give the body structure, absorb nutrients from meals, turn those into energy, and perform certain tasks.
<h3>What is the cell's structure?</h3>
The cellular membranes, the nucleus, and the cytoplasm are the three components that make up a cell. Intricate arrangements of microscopic fibers and tens of thousands of tiny, unique structures known as organelles can be found in the cytoplasm.
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Answer: People of PWS' mental wellbeing In addition to the increased proclivity to phenotypic behaviors mentioned above, people with PWS may experience considerable distress, especially at periods of change in routine, and may also experience a change in mood.
Explanation:
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I think the answer is either three or four I am not 100% certain but I feel like the answer for this question is going to be 3
Blood is the tissue out of the following.
Blood brings oxygen, nutrients, hormones, and a couple of more molecules as well as eliminating the wastes. This is a reason of why it is a tissue. Moreover, other connective tissues have the same origin as blood does which is a second reason of why blood is considered a tissue.
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