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Irina18 [472]
3 years ago
15

What is the function of the nucleol

Biology
2 answers:
sammy [17]3 years ago
5 0
The nucleol is essential for ribosome biogenesis
xeze [42]3 years ago
3 0
The nucleolus<span> makes ribosomal subunits from proteins and ribosomal RNA, also known as rRNA. </span>
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In blue-white screening, what do blue colonies represent?
Basile [38]

Answer:

The correct option is : cells containing empty plasmid vectors

Explanation:

The blue-white screen is a technique which involves the rapid identification of the recombinant bacteria in a vector-based molecular cloning experiment. In this method, a DNA ligated vector is inserted in a host cell which is viable for transformation and grown in presence of X-gal.    

The cells that are transformed with the vectors having the recombinant DNA produce the white colonies. Whereas, the cells transformed with empty vector i.e. the non-recombinant plasmids, produce the blue colonies.

3 0
2 years ago
Vitamin K is needed by the body to allow blood to dot. Most of the vitamin K in humans is produced by bacteria living in the lar
Norma-Jean [14]

Answer:

its not a or d I know that

Explanation:

In adults aged 20 and older, the average daily vitamin K intake from foods is 122 mcg for women and 138 mcg for men. When both foods and supplements are considered, the average daily vitamin K intake increases to 164 mcg for women and 182 mcg for men.

8 0
3 years ago
Question 1 (2 points)
Blababa [14]

The amino acids coded triplets in the 3' to 5' strand on the normalp53 gene of chromosome 13 are lysine, leucine, Glutamine, stop codons.

Explanation:

mRNA is formed by the transcription of DNA strand coding for  a gene.

Any mutation in the DNA sequence even a difference of base pair would cause formation of different amino acids and hence altered protein.

The amino acid is formed in the step of translation where codes are read by tRNA on the mRNA strand and correct nucleotide is brought to growing polypeptide chain.

In transcription 3' to 5'  strand acts a template strand. The amino acids on the p53 gene of chromosome 17 is

3'TTT AAC   GTC    ATC 5'    Gene sequence

5' AAA UUG CAG   UAG 3'   mRNA

lysine, leucine, Glutamine, stop

8 0
3 years ago
Explain why an egg is considered to be unicelular.
Delicious77 [7]

Answer:

membrane and everything else inside is considered the cell, it can be said that it is a single cell. Then, the chicken egg deserves its reputation as the largest cell. If, however you consider the yolk and the albumen (the egg white), separate structures, then eggs are not a single cell.

Explanation:

Short answer: One ovum = one cell = single cell (Latin: unam cellulam), from which we get uni-cellular. ... The zygote resulting from a successful fertilization of a single egg cell (a living unicellular organism), by a single sperm cell (also a living unicellular organism), is also a living unicellular organism

3 0
2 years ago
Why does a person breathe faster and deeper when he/she is exercising? begin your explanation with the fact that when a person e
Scorpion4ik [409]
Well a person breathes harder when he/she exercizing because you are working hard and your body is not used to it so your trying to pass more air through the lungs
4 0
3 years ago
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