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valina [46]
3 years ago
6

Which organism has a central brain

Biology
1 answer:
jeka943 years ago
8 0

Answer: flatworm

Explanation:

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Which of the following is needed for cellular respiration?
lakkis [162]

Answer:

The answer is oxygen and glucose

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Select which of the following are mechanisms used by pathogens to avoid host defenses and to successfully colonize the host.
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Producing toxic substances to suppress host response

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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]
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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
Part of an important cellular process involving a DNA strand is modeled below.
nevsk [136]

Answer: Cellular respiration is the process by which cells in plants and animals break down sugar and turn it into energy, which is then used to perform work at the cellular level.

Explanation: In simpler words, it provides energy for the cell to do basic needs.

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A seismograph records an earthquake, but scientists do not feel it. The earthquake has a magnitude _____.
kvv77 [185]
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8 0
3 years ago
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