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Biology
Posted 10 months ago

The difference between the parasympathetic nervous system and sympathetic nervous system is:
(A) the sympathetic dilates the pupils and constricts airways, whereas parasympathetic increases heartbeat and stimulates saliva
(B) the sympathetic relaxes airways and inhibits digestion, whereas the parasympathetic increases digestion and slows the heartbeat
the sympathetic constricts the pupils and constricts airways, whereas parasympathetic increases heartbeat and stimulates saliva
the sympathetic constricts airways and inhibits digestion, whereas the parasympathetic increases digestion and increases the heartbeat
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Answer from Sia
Verified answer
Posted 10 months ago
B
Key Concept
Reciprocal regulation in glycolysis and gluconeogenesis
Explanation
Glycolysis and gluconeogenesis are reciprocally regulated to prevent the simultaneous operation of both pathways in a futile cycle. Key enzymes like phosphofructokinase-1 (PFK-1) in glycolysis and fructose-1,6-bisphosphatase (FBPase-1) in gluconeogenesis are regulated by allosteric effectors such as AMP, ATP, and fructose-2,6-bisphosphate.
Key Concept
Translation of a DNA sequence into an amino acid
Explanation
Translation is the process by which a messenger RNA (mRNA) sequence is decoded by a ribosome to produce a specific amino acid chain, or polypeptide, that will fold into an active protein. It involves the matching of codons in mRNA with the appropriate tRNA carrying amino acids, facilitated by the ribosome.
Key Concept
Action potential in a vertebrate
Explanation
An action potential is a rapid, temporary change in a cell's membrane potential. The correct order of phases in a vertebrate action potential is: 1) Resting potential, 2) Depolarization, 3) Repolarization, 4) Hyperpolarization, and 5) Return to resting potential.
Key Concept
Difference between the parasympathetic and sympathetic nervous systems
Explanation
The parasympathetic nervous system is responsible for 'rest and digest' activities, slowing the heartbeat, and increasing digestion, while the sympathetic nervous system prepares the body for 'fight or flight' responses, such as dilating pupils, relaxing airways, and inhibiting digestion.

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