A)animal cells must be in osmotic equilibrium with their surrounding environments, because if they swell or shrink their membranes will rupture.
I think the answer is A
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Answer:
4. "Sometimes when people are upset, their imagination plays tricks on them."
Answer:
True
Explanation:
Meiosis is the kind of cell division that results in the production of daughter cells with each cell having half number of chromosomes as the parent cell. Meiosis is the cell division employed by reproductive cells to produce gametes/sex cells. Meiosis occurs in two stages i.e. Meiosis I and II. The chromosome number reduces by half in gametes in order to ensure that after fertilization of both male and female gamete, the resulting organism has the correct set of chromosomes. e.g diploid organism produces haploid gametes which fuses to produce a diploid organism again.
Mitosis is another type of cell division that results in identical daughter cells. They are identical in the sense that they possess the same number of chromosomes as the parent cell that divided. For example, a diploid cell undergoes mitosis to produce two diploid daughter cells.
The cytoskeleton provides energy to cilia
Explanation:
The motion of hair-like structures or axonemes called cilia or flagella are done through sliding movements of one another. This motion needs energy and motor protein molecules called dynein.
Dynein is a cytoskeletal motor protein present in the cytoskeleton and moves in the microtubules and converts the chemical energy in the ATP to mechanical energy to power the sliding and bending movements of cilia.
Apart from facilitating movement, cytoskeleton also contains other proteins which helps it to provide shape and support.
