Answer: They contain DNA and RNA, they can exhibit a wide range of lifestyles, and they are essential to almost every ecosystem.
Explanation:
From the options that factor that does not effect the rate of enzyme reaction is : ( D ) Amount of product.
Enzymes are substances found in organisms that catalyzes the rate of chemical reaction occurring in an organism. during the chemical reaction the enzyme remains intact and is not utilized during the process.
Some of the process that may Inhibit the performance of an enzyme(s) includes ;
- pH ,
- The substrate concentration,
- Temperature and
- The concentration of the enzyme.
The amount of the product does not affect the performance rate of the enzyme because enzymes functions in chemical reactions and not physical reactions
Hence we can conclude that the factor that does not effect the rate of enzyme reaction is the Amount of product
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Answer:
Muscle contraction function.
Explanation:
The nerve endings possess synaptic acetylcholine vesicles ready to be released. The action potential depolarizes the presynaptic terminal and increases the concentration of axoplasmic calcium; Acetylcholine molecules are thus released, so that the concentration of the neurotransmitter at postsynaptic (nicotinic) receptors is temporarily increased. This is followed by post-synaptic membrane depolarization, muscle membrane action potential with increased rnioplasmic calcium concentration, and finally muscle contraction. Acetylcholine is hydrolyzed by acetylcholinesterase and resynaptic at the presynaptic level by cholinecetyltransferase. The etiopathogenesis of myasthenia gravis is autoimmune and there are antibodies against acetylcholine receptors that circulate in the blood, as well as a decrease in the number of receptors on the motor plates, that is, it is produced by the postsynaptic blockage of the myoneural plaque, that generates fatigue and localized or generalized muscle weakness that is characterized by the worsening of the contractile force of the muscle.
A is incorrect, ovulation happens around day 14. B. is correct, during the luteal phase LH from the anterior pituitory gland stimulates the corpus lutem to secrete progesterone. C. is incorrect, the follicular phase is when FSH is released from the anterior pituitary. D is incorrect, the luteum is stimulated in the luteal phase.