Answer:The above statement is "false".
Explanation:
The following events take place during contraction-relaxation of a muscle:
•Action potential in T tubule activates voltage-sensitive receptors,which in turn trigger Ca ions release from terminal cisternae of sacroplasmic reticulum(SR) into cystol.
•Ca ions bind to troponin;troponin changes shape,removing the blocking action of tropomyosin;actin active sites is exposed.
•CONTRACTION; myosin heads alternatively attach to actin and detach,pulling the actin filaments toward the center of the sarcomere;using ATP in this process.
•removal of Ca ions by active transport into the SR after the action potential ends.
•RELAXATION occurs.Actin and myosin return back to its unbound state.
117kcal. To know the total kcal, we first have to determine the conversion rate for carbohydrates, fat, protein, water, and grams of vitamins.
Here are the conversion rates:
4kcal per gram of protein.
4kcal per gram of carbohydrate.
9kcal per gram of fat.
0kcal per gram of vitamin.
0kcal per milliliter of water
From the given values, we can say that the food serving gives 117kcal.
When a snail is touched and retreats into it's shell, it is an example of a response to stimuli.
A stimuli is any change in the place you're at. When this happens, your body has a natural instinct to react, or respond.
So yes, the answer is B.
Alleles that are masked by others are called recessive alleles.
The division of nucleus and it's contents are mitosis.
