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Bingel [31]
2 years ago
7

What characteristic makes the HeLa cells some of the most celebrated and widely used cells by scientists today? *

Biology
1 answer:
omeli [17]2 years ago
5 0

Answer:

It's an immortal cell line derived from cervical cancer cells taken from Henrietta Lacks used in scientific cancer research

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Vaccinations help prepare the body to fight invasions of a specific pathogen by
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2. Stimulating antibody production.

Explanation:

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An organism has the following characteristics: cell wall, heterotrophic, unicellular, and prokaryote. What kingdom does it belon
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The answer is Eubacteria

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A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte
sukhopar [10]

Answer:

A) The pollen grains will be pure red.

Explanation:

Plants have alternation of generations, this means that there are two different stages in their life-cycle: a sexual haploid (n) phase and an asexual diploid phase (2n). These phases occur in different individuals, so there is an haploid plant called gametophyte that carries gametes and after fecundation, it will rise a diploid sporophyte (asexual).  

In seed plants, the sporophyte is the plant that we normally see, and the gametophyte is reduced into an organ of the sporophyte. The male gametophyte is the pollen that is produced in the sporangium in anthers (parts of sporophyte).  When a pollen grain fecundes a female gametophyte (egg), it will produce a diploid embryo or new sporophyte.

Therefore, if the researcher exposes pollen to both stains, these grain will stain red, because red stain identifies gametophyte tissue.

3 0
3 years ago
How can high levels of saturated fat and cholesterol in the diet affect a person's health?
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These disorders and complications are just the few of the many possible outcomes of the mentioned imbalance of fat. How? because there is too much lipid for the body to process and metabolize thus, breach of homeostasis.

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If not for human activities how long would carbon stay as fossil fuels?
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about 10 years or less

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