You are probably talking about mate choice or intersexual selection. This evolutionary strategy helps animals find the healthiest and most rigorous individuals to pass their genes onto. In animal world, attractive appearance and confident actions are traits of better genes. A mate with characteristics like vibrant plumage and better courtship actions is more likely to be healthier and more likely to produce healthy offspring. It also means that the pair, or the mother, have better chances of reproducing.
The question provided is not complete as it lacks the group of choices, however the group of choices are given as follows:
A. A contraction fails to occur because an action potential is not generated in the muscle cell.
B. A contraction fails to occur because this toxin directly prevents ion release from intracellular stores.
C. A contraction fails to occur because neurotransmitter release by the motor neuron is blocked at the neuromuscular junction.
D. A contraction fails to occur because this toxin prevents cross bridge formation and thereby directly prevents contraction.
E. C and D are both true
Answer:
The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.
Explanation:
A muscle contraction takes place when action potential bring to muscles by nerves, which is traveled with the help of motor neuron and imitated the muscle contraction.
Acetylcholine or Ach is a chemical messenger to bring the nerve impulses between a nerve and a muscle. If the receptor is block with applying toxin muscle will not contract as ACh will not be able to propagate the nerve impulse to the muscle so there will be no action potential.
The correct answer is option A : A contraction fails to occur because an action potential is not generated in the muscle cell.
Hiii!! I believe the answer is False. The temperature of an object is a measure of the average kinetic energy of the particles in an object. ((:
<span>What
exactly do you mean by store dirty dishes? If you mean to leave them
in the hand washing sink (after rinsing them out) until after dinner
when you do all the dishes I don't see why not. Soap and water (and a
little bleach) can wash away anything but sin.</span>
Answer:
The ocean/water, land, weather and food.
Explanation:
The Atlantic, or Artic ocean has been melting at a faster rate quicker than before . The melted iceburgs which turn into water will flow into the oceans which will then increase the rise in hight of water in ocean and seas. Land will eventually be dried up because of the rise in temperature and the change in climate. There will be less food/crops, because we have used up most of the fresh water we had been using to grow crops for over many years. Scientists and others have considered turning the ocean's salty water into fresh water for the crops . But the process will take a while and will be a very expensive process.
