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Advocard [28]
3 years ago
14

The concept that living cells only arise from preexisting living cells is called:

Biology
1 answer:
rjkz [21]3 years ago
3 0
It is called The Cell Theory.

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Look at the apparatus shown. It can be used to compare the amount of __________ given out by different fuels. What one word comp
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Look at the apparatus shown. It can be used to compare the amount of <em>energy</em> given out by different fuels. What one word completes this sentence?

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Name proper type of plate boundary for each situation.
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San Francisco and the San Andreas fault answer 5

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A bacterial cell usually contains a single loop of DNA that is located in the cytoplasm of the cell and is not surrounded by a n
Verdich [7]

Answer: A is the correct answer.

because for the treatment of one type of diabetes insulin should be provided but isolation of insulin and production is so costly.

but as DNA recombination has developed we can use bacterial replication system to produce insulin. they replicate very fast so large amount of insulin will be produced and then it can isolated.

but we also know that insulin of bacteria needs some modification before it can be used in human.

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7 0
3 years ago
Histologically, what feature is shared by all tonsils but is absent in other malt nodules?
ira [324]

Crypts Feature is shared by all tonsils but is absent in other malt nodules. Anatomical structures called crypts are deep, narrow incisions into larger structures. The Crypts of Lieberkühn are a typical type of anatomical crypt.

It is not the only form of the tonsil, though; some tonsils also feature crypts. The deep regions of these tonsils are accessible to the outside world through these crypts, making them more susceptible to infection. An intestinal gland, also known as a Lieberkühn crypt or intestinal crypt, is a gland that can be found in the small and large intestines' intestinal epithelium between villi (or colon).

The epithelium that covers the glans and intestinal villi are made up of a variety of cells, including enterocytes (which absorb water and electrolytes), goblet cells (which secrete mucus), enteroendocrine cells (which secrete hormones), cup cells, tuft cells, and Paneth cells (which secrete antimicrobial peptides) and stem cells at the base of the gland.

Learn more about Gland brainly.com/question/4133041

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4 0
2 years ago
In pea plants, round seeds are dominant to wrinkled seeds. If you cross two heterozygous plants, what would your ratios be for g
Mila [183]

Answer:

Genotype - RR - 25%, Rr - 50%, rr - 25% (1:2:1)

Phenotype - Round seeds - 75%, Wrinkled seeds - 25% (3:1)

Explanation:

Let the letter "r" stand for the alleles, where R is round seeds and r is wrinkled seeds. A genotype is an individual's genes represented through alleles. Phenotypes are how the genes express themselves. In other words, genotypes will be written using letters, the alleles, and phenotypes will be the possible outcomes of the alleles.

To find the ratios/percentages of the genotypes and phenotypes you can use a punnet squares. Both of the parent seeds have the genotypes Rr and the phenotype of round seeds.

If you create punnet square (which had four boxes in total) 1 will have RR, 2 will have Rr, and 1 will have rr. These are the ratios for the genotypes. Each box represents 25%, so the percentages will be 25, 50, and 25. Finally, 3 of these boxes (RR and Rr) will result in round seeds because those are domiant. Only the genotype rr will result in wrinkled phenotype. Therefore, the ratio is 3:1 or 75% to 25%.

5 0
3 years ago
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