Involuntary muscles are the muscles that move without conscious control of the organism and are controlled by the autonomic nervous system.
Some examples of this are:
• the ,cardiac muscle, (,heart,)
,
• smooth muscles,, like the ones found in the ,stomach,, ,intestine,, and, bladder.
Answer:
Your answer is B
Explanation:
Ions play an important role in the metabolism of all organisms as reflected by the wide variety of chemical reactions in which they take part.
Answer:
The blanks will be filled by following words - inside, open
Explanation:
The sentence in the question tells about the mechanism of closing of stomata in plant cells and the role of potassium ions in closure of stomata. The completed statement will be -
Potassium ions are actively pumped out of the guard cells. When K are pumped in, the inside of the cell is hypertonic relative to the outside of the cell that is hypotonic. Subsequently, water moves <u>inside</u> the guard cells, the guard cells bulge and the stomata <u>open</u>.
At divergent plate boundaries, new oceanic crust is formed. At convergent boundaries, old oceanic crust is destroyed. But at transform plate boundaries, crust is neither created nor destroyed :)