Answer:
C. cell membranes
Explanation:
the black/dark material that is visible in many of these onion cells is cell membranes.
The solution would be D. Pyruvic acid is produced during glycolysis and travels from the cytoplasm and enters the mitochondrion.
Answer:
Change the number of neutrons in an atom and it becomes an isotope, change the number of electrons, it becomes an ion. When you change the number of protons in an atom, you will change the atom from one element to a different element. Sometimes, when you add a proton to an element, the element will become radioactive.
Hope this helps!
Answer:
the picture is blank fix and i will answer in comments
Explanation:
I don't know what your question is right here..? But cell division is when one cell copies DNA to make an exact copy to which the cell splits resulting in two daughter cells
