Answer:
Gravity, electricity, and magnetism are considered non-contact forces because they do not physically act on objects.
Explanation:
Gravity, magnetism, and electricity all use fields to act on objects without actually touching them. They can all force objects to move without touching them through these fields.
Answer:
The correct answer is "proteins in which isoleucine is inserted at some positions normally occupied by leucine".
Explanation:
The missing options of this question are:
A. proteins in which leucine is inserted at some positions normally occupied by isoleucine.
B. proteins in which isoleucine is inserted at some positions normally occupied by leucine.
C. no abnormal proteins, because the ribosomal translation machinery will recognize the inappropriately activated tRNAs and exclude them from the translation process.
D. no proteins, because the inappropriately activated tRNAs will block translation
The correct answer is option B. "proteins in which isoleucine is inserted at some positions normally occupied by leucine".
In normal conditions, the enzyme leucyl-tRNA synthetase attaches one leucine amino acid to leucyl-tRNA as part of synthesis of proteins that have one or more leucine residues in their sequences. Since the enzyme of this mutant strain of bacteria mistakenly attaches isoleucine to leucyl-tRNA 10% of the time, approximately 10% of all the proteins that normally have leucine residues will going to have isoleucine. Therefore, These bacteria will synthesize proteins in which isoleucine is inserted at some positions normally occupied by leucine.
The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction.
Https://quizlet.com/51034175/biology-flash-cards/
The correct answer is "letter. d <span>Schizophrenia and Parkinson's disease".
Dopamine is described as a </span><span>neurotransmitter that </span>enables manipulate<span> the </span>mind<span>'s </span>reward<span> and </span>delight centers<span>. Dopamine </span>also enables regulate movement <span>and emotional responses, and it </span>allows<span> us </span>now to see the <span>rewards itself, </span>however it shows us how to reach and act towards them<span>.</span>
