Answer:
The DNA gets copied equally through a process called <em>mitosis</em> and the copied DNA(chromosomes) are split equally among the daughter cells.
Answer:
The correct answer would be D.Alveolar sacs are surrounded by thin capillaries where gases can be exchanged.
Alveoli are tiny sacs which form the site of gas exchange in the lungs.
The features of alveoli which help in gas exchange are:
- They increase the surface area in the lungs thus, more space is available for gas exchange.
- They have very thin walls, as thin as the thickness of a single cell only.
- They are surrounded by a bunch of thin capillaries which exchange gases with alveoli.
Answer:
Disease spread can affect air travel really badly because it can be so easy for anyone to get infected with how crowded airports can be. This usually results in extra safety steps taken up to cancelled flights due to closed borders. A popular example of this is the current pandemic crisis.
Explanation:
<em>At the beginning of cellular respiration, energy is stored in the bonds of</em> glucose <em>molecules.
</em>
<em>At the end of cellular respiration, energy is stored in the bonds of</em> ATP <em>molecules.
</em>
This looks like mitosis where chromosomes split up and duplicate
