Explanation:
Endosymbiotic theory states that the eukaryotic cells evolved by the symbiosis of unicellular prokaryotic cells such as bacteria and archaea. According to this theory, the animal cells and plant cells are believed to possess mitochondria and chloroplast respectively through endosymbiosis
Enzymes and acidic juices in the stomach, which break proteins down into smaller molecules, is known as proteolytic enzyme.
Proteolytic enzyme (also known as protease) is any group of enzymes that break down the long chainlike proteins molecules into smaller molecules (peptides) and later into amino acids. In the stomach, protein digestion takes place. The three main proteolytic enzymes; pepsin (produced by the stomach), and trypsin and chymotrypsin (produced by the pancreas) breaks down proteins into polypeptides which are eventually broken down into amino acids by several exopeptidases and dipeptidases.
The human immune virus cannot reproduce without host cells.
<h3>Human immune virus</h3>
The human immune virus is an RNA virus that only becomes active in human hosts.
When the virus gains access into a suitable host, it embeds its genome into that of the host and as such, the genetic machinery of the host is utilized to multiply the genome of the virus.
With time, the virus gradually takes over the host's genome system and breaks down their immune system, making them susceptible to diseases.
More on the human immune virus can be found here: brainly.com/question/16142422
Answer: A) α helix
C) β sheet
Explanation:
it is used to visualise the dihedral angles of amino acid residues in protein structure.
The R. plot can be used to determine the secondary structure of proteins.it has 4 quadrant . in Quadrant l is the location of left handed helices.Quadrants ll is the location of beta strands , while right –handed alpha helices occupied quadrant lll.