Examples of skeletons protecting the body are, the rib cage for the heart and lungs, and the pelvis for the nerves in the lower body. Your spinal chord has bone to protect to protect the sensitive nerves inside.
<span>air along the mountain slopes cools and moves down the mountain into the valley producing a mountain breeze</span>
Answer:
c. causes cells to swell and burst, whereas apoptotic cells shrink and condense
Explanation:
These two mechanism are responsible for death of cells in multi cellular organisms.Apoptosis is naturally occurring process which is well organised and programmed.It is ensures the automatic death of old and worn out cells, needed for certain cellular developments. This is demonstrated by DNA fragmentation,cell shrinkage,and the break down of the nuclear walls.It can be initiated through two pathways of intrinsic and extrinsic,The latter leads to death from internal factors,while in the former is when external factor causes the death .
However,when cell death is influenced by external factors(toxins) in the cell environments,which lead to unpredictable or unregulated process leading to cell death ,the process is called Necrosis.it is demonstrated with the swelling and busting of the cell.and characterised with inflammation. It is an accidental death which causes injuries to the cells and tissues.
Answer:
Which of the following structures are not involved in asexual reproduction? Gametes.
Explanation:
So option A. Have a great summer. This is the correct answer.
Answer:
C) Initially mutation will be the only source of variation in the population
Explanation:
In this experiment, mutation will be the only source of variation in the population.
Therefore, natural selection cannot begin operating immediately on the population because there was no initial variation.
Also initial differences in the population will not be as a result of sexual selection.
Finally, mutation is a random process. Despite the two populations being identical they will accumulate different mutations. Therefore after 100 generations the two populations will not be genetically identical.
