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Harrizon [31]
3 years ago
6

The pressure needed to pump blood back to the heart is produced by the _____.

Biology
1 answer:
son4ous [18]3 years ago
5 0
It would be the muscles because their contracting and forcing the blood back  to the heart

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The position on the basilar membrane at which waves reach their peak depends on the frequency of a tone according to which theor
uysha [10]
As per Georg von Békésy's place theory, the position on the basilar film at which waves achieve their pinnacle relies upon the recurrence of a tone. High frequencies deliver waves that crest close to the shut end and are deciphered as shrill sound, while low-recurrence waves travel more remote, topping at the far end, and are translated as low-pitched.
5 0
4 years ago
When RNA is processed in the nucleus and made ready for transfer out into the cytoplasm for protein synthesis, which of the foll
IRISSAK [1]
Answer:
Letter E - exons are cut from the strand and removed

Explanation:

Letter A and B are incorrect because the poly-A tail and guanine cap are added to the 3’ and 5’ end respectively. They aid in translation of the mRNA, while serving as protection. The poly-A tail is repeated adenine nucleotides, while the guanine cap is a modified guanine nucleotide.

Letter C is incorrect because alternative splicing is one mechanism for generating variation, and is thought to be one of the reasons for why humans have smaller genomes than other organisms and still maintain high complexity. Alternative splicing is incredibly important because it produces more than one transcript from a pre-mRNA.

Letter D is incorrect because introns are the non coding portions of the mRNA. They are excised to make a smaller mRNA transcript, and one that contains all the protein genes.

This letter E is the correct answer, because exons are the coding portions of the mRNA, and are not excised during RNA processing.

Hope that helped! If I made a mistake, please let me know.
8 0
3 years ago
Explain how humans obtain the energy and matter they need in order to survive?
tresset_1 [31]
We eat and drink to obtain the energy and matter we use to survive

6 0
3 years ago
Read 2 more answers
A doença vitiligo afeta qual doença do corpo?
Zolol [24]

Olá! Eu acredito que você colocou sua pergunta na categoria errada. Não se esqueça de fazer a pergunta na seção de idiomas estrangeiros para evitar que a pergunta seja excluída.

Com sua pergunta real, não acho que posso ajudá-lo com isso, e sinto muito por isso.



4 0
3 years ago
A unique feature found only in archaeal cells is the Group of answer choices ability to grow in acidic environments presence of
ddd [48]

Answer: presence of L-glycerol in the membrane lipids

Bacteria and eukaryotes have D-glycerol in their membrane lipids.

Explanation:

7 0
3 years ago
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