Answer:
The number of chloroplasts per cell varies from one, in unicellular algae, up to 100 in plants like Arabidopsis and wheat.
Answer:
The correct answer is - the cytoskeleton.
Explanation:
A cytoskeleton in a cell is that appears as a dense network of whiplike fibers, tubules, and filament which maintain the shape and strength of the cell by interconnecting various cellular structure with one another.
These are made up of similar proteins in various organisms and can be found in the cytoplasm from the nucleus to the cell membrane.
Thus, the correct answer is - the cytoskeleton.
Whereas apoptosis is a form of cell death that is generally triggered by normal, healthy processes in the body, necrosis is cell death that is triggered by external factors or disease, such as trauma or infection. Apoptosis, which can also occur as a defense mechanism during healing processes, is almost always normal and beneficial to an organism, while necrosis is always abnormal and harmful. Though necrosis is being researched as a possible form of programmed cell death (that is, a sometimes natural process), it is considered an "unprogrammed" (unnatural) cell death process at this time. As a usually healthy form of a cell's life cycle, apoptosis rarely demands any form of medical treatment, but untreated necrosis can lead to serious injury or even death.
The hidden momentum of population growth is caused by population age structure. In 2010, the world rate of population growth was closest to it.
