Answer:
two chromatids
After DNA replication, each chromosome now consists of two physically attached sister chromatids. After chromosome condensation, the chromosomes condense to form compact structures (still made up of two chromatids). As a cell prepares to divide, it must make a copy of each of its chromosomes.
Explanation:
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Answer:
For one thing, there's lots more of it. There are many more environmental niches to be occupied in salt-water bodies, and importantly, they're all connected, making it easier for species to migrate and adapt to new habitats. Conversely, fresh-water habitats are often more isolated, confining species to a single habitat and decreasing the likelihood that they'll be able to migrate and adapt.
Explanation:
Answer:
The correct answer is C. The enzyme that ensures there is an equal distribution of newly synthesized phospholipids across the membrane is the scramblase.
Explanation:
Scramblases are proteins used to move phospholipids from one monolayer to another of the lipid bilayer inside the plasma membrane of a cell. This protein, unlike flippase, is not selective with respect to lipids but "reverses" them on the other side of the membrane in a random and non-specific manner. It therefore causes the phospholipids not to be added only on one side when the membrane is formed or expanded, but also on the opposite side in contact with the extracellular environment.
