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Alex17521 [72]
3 years ago
6

Which of the following best summarizes the function of the respiratory system?

Biology
2 answers:
igor_vitrenko [27]3 years ago
7 0
The answer would be D.
kompoz [17]3 years ago
6 0
A. To transport oxygen to cells and wastes away from cells
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Can someone help me create an island with how it was made and 5 landmarks that has a geological back story to them.
rjkz [21]

Answer:

I used to live in an island, it was made out of limestone and volcanic rock

Explanation:

began to form with undersea volcanic eruptions in the Eocene

-Marianas Trench

-cliffs, cave, peninsula, grotto

3 0
2 years ago
Where are endocrine glands found?
Ludmilka [50]
In many different places to find them. Like pancreas, ovaries, testes, thyroid, parathyroid, hypothalamus, and neuro-endocrine organs.<span>
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4 0
3 years ago
Classify each RNA post-transcription processing event according to whether it occurs in prokaryotes or eukaryotes.
tigry1 [53]

'RNA is transcribed and translated in the cytoplasm', 'transcription produces an mRNA ready for translation' and 'RNA is proofread for errors' occur in prokaryotes, whereas '5′ cap, 3' poly-(A) tail and RNA splicing' occur in eukaryotes.

The prokaryotic cells (e.g., bacterial cells) do not contain cell nuclei, thereby the messenger RNA (mRNA) must be transcribed and translated in the cytoplasm.

During prokaryotic transcription, the RNA transcript is proofread for errors. In bacteria, DNA polymerases proofread the transcript by using their 3’ → 5’ exonuclease activity.

In eukaryotic cells, RNA processing consists of several mechanisms:

  • A 7-methylguanosine cap (5′ cap) is added to the 5′ end of the precursor messenger RNA (pre-mRNA).

  • A 3' poly-Adenine (A) tail is added to the 3' end of the pre-mRNA.

  • Both the 5′ cap and 3' poly-(A) tail protect the RNA transcript from its degradation by exonucleases.

  • Eukaryotic RNA splicing consists of the removal of non-coding regions called 'introns' and subsequent splicing of the protein-coding regions called 'exons'.

Learn more in:

brainly.com/question/24415778

7 0
2 years ago
Which statement provides an example of epigenetics A. Genetic mutations arising every other generation B. Selective breeding of
irina [24]

Answer: d. mothering style affecting the developing brain

Explanation:

Epigenetics is the study of features or "phenotypes" which do not involve changes in the DNA sequence. Epigenetics is about how genes are expressed and used instead of the DNA sequence of the genes themselves.

The behaviour of a person's genes depends not only on the DNA sequence of the genes, but also on so-called epigenetic factors. Effects on genes from the external environment can affect disease, and some of these effects can be inherited in humans.

So, Mothering style which affects the brain development is an exampe of epigenetics which do not show any genetic feature.

Hence, the correct option is d.

6 0
2 years ago
Which benefit comes with flexibility? a. increased muscle endurance b. improved posture c. improved energy production d. prevent
Ksivusya [100]

The answer is d. prevention of muscle strains. Other benefits of flexibility are Joint health, prevention of low back pain injuries, temporary reduction of post-exercise muscle soreness, relief of aches and pains, relief of muscle cramps, maintenance of good posture and balance, relaxation.

6 0
3 years ago
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