Proteins
The internal and external
regulators are mostly composed of proteins. These regulators plays a role in
many cells, they control, regulate and support the process in which involves
the cell cycle. The cell cycle is where each cell undergoes cell division,
either mitosis or meiosis. Thus, these regulators react to their designated
areas, internal regulators responds to the internal stimuli and external
regulators responds to the external stimuli. These regulators help and support
the cell cycle as much as not to cause any irregularities during the process.
Answer:
Option B, weight greater than your true weight
Explanation:
When a person stand on a scale in an elevator, his inertia tries to remain constant and stable. Thus when a lift starts moving upward it presses against the feet of that person in order to lift him/her up. In doing so an apparent weight is applied on the person which do not change with speed and it is due to this weight that scale shows a higher reading when elevator moves up.
Hence, option B is correct.
The isoelectric pH has been defined as the electrically neutral molecule. "At the isoelectric pH of an amino acid that has two pKa values the net charge is <u>0</u>." Thus, option C is correct.
<h3>What is isoelectric pH?</h3>
The isoelectric pH has been defined as the potential of the hydrogen at which the molecule does not carry a net charge and is said to be electrically neutral. The amino acids at isoelectric pH do not carry a charge.
If there are two pKa values of the amino acid then the amino acid has zero charges as the amino acids are always neutral at the isoelectric point.
Therefore, in option C. the net charge is <u>zero</u>.
Learn more about isoelectric pH, here:
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Your question is incomplete, but most probably your full question was, At the isoelectric pH of an amino acid that has two pKa values the net charge is _______.
A) 0.5
B) 1
C) 0
D) -1
A. Pressure receptors in the stomach walls signal fullness or emptiness
