Answer:
A. Activated B - cells divide to form memory cells.
Explanation:
The vaccine contains the dead version of the respective virus, so that virus will be inactive and it will become easy for the WBC to kill it and antibodies will be formed.
This is done because if we get infected by the virus, our body cells (WBC) will remember that how they killed the first entered virus (the dead version) and it will be easy for them to kill the active virus as they know the antibodies which were formed to kill the inactive virus.
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Answer:
All
Explanation:
You would need carbon dioxide to be able to sustain life forms such as plants, warm enough temperatures to allow the development of animals, (because they cannot be frozen), they would, of course, need oxygen to allow anyone to breathe, and finally liquid water to sustain healthy life, because we must hydrate that is necessary for survival.
I believe the correct answer from the choices listed above is the second option. It is the genes that is responsible for passing albinism from a parent organism to its offspring. Genes are what you get from your parents, proteins are what you get from eating meat, codons are basically the stuff in genetic codes and base pairs make up your DNA.
Both the deciduous (or temperate) forests and the boreal forests (taiga) can be found in the temperate zones of the world. Taigas are the largest terrestrial biomes.
Both deciduous forests and boreal forests experience 4 relatively distinct seasons; however, the former experiences a wider temperature range with varied precipitation patterns, while the latter is relatively cold most of the time.
Deciduous or temperate forests consist of deciduous plants and trees, which means that they that shed leaves during autumn and remain inactive during winter (e.g. oak, maple, and ash), while boreal forests mostly consist of evergreen trees, primarily the conifers (e.g. pine, cedar, juniper, and redwood).
The two figures below show the different (geographical or climate) zones, and the different biomes, respectively, found all over the world.
(Figure sources: 1. https://en.wikipedia.org/wiki/Temperate_climate#/media/File:World_map_indicating_tropics_and_subtrop....
2. http://www.bio.miami.edu/ecosummer/lectures/lec_biomes.html)
Answer: C. Myelin Sheath
Explanation: Myelin is an insulating layer or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells.