Answer:
As a cell prepares to divide, it must make a copy of each of its chromosomes. The two copies of a chromosome are called sister chromatids.
Answer:
B. Lysosomes are acidic because they contain acid hydrolases.
Explanation:
Lysosomes are small cell organelles that float outside nucleus. Lysosomes are present in the cytosol of the cells.
Lysosomes are acidic in nature having pH below 5 because of proton pumping through the plasma membrane to maintain this acidic pH.
This acidic nature of lysosomes play a role in fight against diseases.
Hence, the correct option is "B".
Answer:
its 9 for the first one
Explanation:
look at the other ones they all contain a pattern of having half the amount