Answer:
Cells are small because they need to keep a surface area to volume ratio that allows for adequate intake of nutrients while being able to excrete the cells waste. That is why the cell needs to be small. The smaller it is, the larger the surface area to volume ratio is. ... This is why cells are so small.
explicación:
The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. ... That is why cells are so small.
Petroleum is not a source of coal or coal-precursor.
DNA replication is said to be semi-conservative because of this process of replication, where the resulting double helix is composed of both an old strand and a new strand. ... Semiconservative replication would produce two copies that each contained one of the original strands and one new strand.
Atrophy
Explanation: Atrophy is the progressive degeneration of muscle or nerve tissue. When you wear a cast for multiple weeks and you’re not allowed to bare weight, your muscles tend to become weaker because you haven’t used it in a while. That’s why PT is recommended after a bone break.
Approximately 4.5 billion years ago
