Answer:
When HIV infects a cell, it first attaches to and fuses with the host cell. Then the virus uses the host cell's machinery to convert the viral RNA into DNA and replicate itself. The new copies of HIV then leave the host cell and move on to infect other cells.
Answer:
the same number of cells in both.
Explanation:
Nutrient broth is a general purpose medium that can be used to cultivate different variety of both fastidious and non-fastidious microorganisms.
Nutrient broth is known to contain or compose of simple peptone and a beef extract.
It is known to be used for bacteria that will not form colonies on a solid surface.
Nutrient broth can be prepared through this following steps
* Add 13g of nutrient broth powder in 1L of distilled water.
* Mix and dissolve them completely.
* Pour them into the final containers (eg. conical flask)
* Sterilize by autoclaving at 121°C for 15 minutes.
In this case, since the 100 ml and 1000 ml is prepared using the same method, it is expected to have the same number of cells in the same volume of the broth.
Explanation:
Answer : The process of transpiration can be demonstrated by tying a polythene bag around the rose plant and keeping the plant in sunlight for one or two hours. Droplets of water would be seen on the inner sides of polythene bag due to transpiration.
As the peppered moth evolved over time, its wings changed from light to dark so that it could better hide from predators. The evolution of peppered moth is used an example of natural selection. The evolution of the peppered moth over the last two hundred years has been studied in detail. Originally, the vast majority of peppered moths had light coloration, which effectively camouflaged them against the light-colored trees and lichens which they rested upon. However, because of the wide spread pollution during the Industrial revolution in England, many of the lichens died out, and the trees that peppered moths, or typica, to die off from predation. At the same time, the dark-colored, or melanic, moths, carbonaria, flourished because of their ability to hide on the darkened trees.
Answer: The amniotes are distinguished from amphibians by the presence of a terrestrially adapted egg protected by amniotic membranes. The amniotes include reptiles, birds, and mammals. A key adaptation that permitted reptiles to live on land was the development of scaly skin. I hope this helps
Explanation:
