Parallel after-discharge circuit
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.
<span>C. the primary consumers would die out or move elsewhere
</span>An distortion in an ecosystem mainly like plants can insidious consequences in an ecosystem. With primary consumers dependent on autotrophs as the source of food and thus, energy if these resources are gone then they would probably die or migrate somewhere else.
<span>Ecosystem composes both the biotic and abiotic factors that make up the entire ecological system balanced and functioning. If ever one factor has cease to exist and that special element plays a major role in the food chain, scarcity will lead to extinction. </span>
Well, nitrogen is the gas that makes up 78% of the earth's atmosphere.
I would guess its in the air that we breathe. I am not really sure. Just basing this answer off of research.