The levels of protein structure including the types of bonds that are involved are:
a. Primary - peptide bonds.
b. Secondary - hydrogen bonds
c. Tertiary and Quaternary - Hydrogen bonds, covalent bonds and hydrophobic interactions.
<h3>What are the levels of
protein structure about?</h3>
Primary Structure: A protein's distinctive and ordered amino acid sequence is known as its primary structure. It describes the order in which amino acids are added to a polypeptide as it develops during translation. There are essentially an endless number of fundamental sequences with 20 distinct amino acids.
Secondary Structure - It is one where there is a polypeptide chain's that consistent local patterns of coils or folds.
Tertiary Structure : It has a polypeptide's general three-dimensional form as a result of interactions between the R groups of the amino acids that make up the chain.
Lastly, Quaternary Building: It is the form that is produced when two or more polypeptide subunits come together.
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Answer:
A frameshift changes every codon past it. A base substitution only changes one codon.
Explanation:
DNA is comprised of nucleotides (A, C, T, G) that make up amino acids. Every three bases is called a codon and represents an amino acid.
In a frameshift mutation, a nucleotide is either added or deleted from the sequence. This offsets the entire sequence after it because the reading frame shifts. Here's an example:
ACTGCTATCGTCATC
If another T is added in between the first and second codons, then every codon after will be changed.
ACT>T<GCTATCGTCATC
A substitution mutation is usually less severe, as it only alters one codon in the sequence. These occur when one nucleotide is replaced by another one. Here's an example:
ACTGCTATCGTCATC
Let's say the first G is replaced by a T.
ACT>T<CTATCGTCATC
As you can see, none of the other codons changed.
Typically, a frameshift mutation is considered worse than a substitution mutation.
Answer:
eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not.
Explanation:
Eukaryotes have many membrane-bound organelles while prokaryotes have no membrane-bound organelles.
Answer;
This is because the nervous system would no longer be linked to the endocrine system.
The reason as to why the adrenal and thyroid glands atrophy if the pituitary glands cease to function is because the nervous system would no longer be linked to the endocrine system.
Thyrotrophic and adrenocorticotrophic hormones from the anterior pituitary keep the adrenal and thyroid glands in action. If pituitary stops secreting them, it is obvious that adrenal and thyroid would be affected.
<span> polymerases, of which there are many. Understanding which types of polymerases perform which functions under which circumstances will clarify the complexity of this topic. The processes of transcription, making RNA from DNA, and replication, copying DNA from DNA, are major functions that require polymerases to link nucleotides into long chains. </span>
