They are transferred from protein in the midbrain of either the thylakoid membrane or the mitochondrion. their energy is used to pump hydrogen protons out of the inner membrane space.
in the end, the electrons are added to the hydrogen protons and oxygen to create water molecules
Answer:
Generation of an action potential in the neuron.
Stimulation of Ca2+ entry into the neuron
Release of acetylcholine into the synapse
Depolarization of the muscle fiber membrane
Explanation:
The following events takes place in the vertebrate neuromuscular junction
a) Nerve Action Potential - Action potential reaches the axon terminal
b) Entry of calcium ion - The calcium ion reaches the axon terminal and enter into the presynaptic terminus after which the Synaptic vesicles fuse with the membrane of axon terminal
c) Releasing of Arch Quanta - Acetylcholine is released into synaptic cleft which then binds to the receptor sites on motor end plate
d) The Na+/K+ channels opens and Motor end plate becomes depolarized.
Answer:
First, sperm are produced in the small tubules of the testes. These oval shaped glands are protected by a sac called the scrotum. After the sperm cells are produced, they are stored in a large coiled tube on the outer surface of each testicle called the epididymis. From this tube the sperm go into a larger tube called the vas deferens, which eventually carries them to the external male reproductive organ, the penis. Along the way sperm is nourished by a sugary fluid from the Cowper's Gland, a chemical fluid from the prostate which is the most common site of cancer in men, and a fluid from the seminal vesicle, which are two small glands located near the bladder. These fluids plus the sperm cells combine to form semen, the fluid ejaculated from the penis during orgasm. Before a male can ejaculate, the spongy tissue surrounding the penis becomes engorged with blood causing the penis to become stiff and hard. This is known as an erection. The tube that carries the semen from the body is urethra. This tube also carries urine from the bladder. Males can also have uncontrolled ejaculation during sleep, which are called nocturnal emissions.
Explanation:
The male reproductive system comprises of various sex organs that assume a job during the time spent human multiplication. These organs are situated outwardly of the body and inside the pelvis. The reason for the organs of the male reproductive system is to play out the accompanying capacities:
• To deliver, keep up, and transport sperm (the male reproductive cells) and defensive liquid (semen)
• To release sperm inside the female reproductive tract during sex
• To deliver and discharge male sex hormones liable for keeping up the male reproductive system
Catalysts can speed chemical reactions by lowering the activation energy
The answer is C The enzyme lowers the energy of activation for the reaction. The amount of free energy produced in the reaction increased with an enzyme. Energy of
Activation
Free energy