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yan [13]
3 years ago
8

Q1: An important function of the respiratory system is to:

Biology
1 answer:
Helga [31]3 years ago
3 0
ANSWER: D




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EXPLANATION:
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If the initiating codon of a mRNA became mutated, what would the effect be on the transcript?
faltersainse [42]

Answer:

Translation will not occur.

Explanation:

The start codon is responsible for the initiation of translation in both prokaryotes and eukaryotes. AUG is the start codon in both which code for methionine in eukaryotes and formyl methionine and prokaryotes.

Therefore if the starts codon becomes mutated than the tRNA would not able to recognize the initiation codon and no methionine would be added as the first amino acid so the translation process might not start and no protein forms. Then the ribosome scans further for the next start codon to start translation.

7 0
3 years ago
Which statements about viruses are true? Select all that apply. A. Viruses are ultramicroscopic cells. B. Viruses are infectious
dlinn [17]

Answer:

Answers A, B, C, D and E are all correct

Explanation:

Viruses are non living, ultramicroscopic cells, infectious particles with a protein coat surrounding the nucleic acid that replicate inside any life form and infeft them.

Bacteriophages, like viruses that can also infect the animal cells infected by the bacteria.

7 0
3 years ago
Read 2 more answers
Cells created by meiosis can be
Hitman42 [59]

Answer:

D. N

Explanation:

Meiosis is a kind of cell division which produces daughter cells that are genetically different from the parent cell and have a reduced number of chromosomes (by half).

Meiosis occurs only in reproductive cells to produce gametes. If a diploid (2n) cell undergoes meiosis, a haploid (n) daughter cell will result. This means that the chromosome number has been reduced by half in order to maintain the chromosomal number of the next generation.

6 0
2 years ago
Which statement regarding the relative ages of rocks and events is
taurus [48]

Answer:

C. Faults are younger than the youngest layer they cut through.

Explanation:    

<em> A. Intrusive rock is older than the surrounding rock layers. </em>WRONG. The intrusive rocks are those that solidify underground and always form after the ones around them. So they are younger than the surrounding rocks.

<em>B. A fold is older than the oldest rock layer it contains. </em>WRONG. First, layers are set, and then, it occurs the folding. The folding is always younger than the involved layers.  

<em>C. Faults are younger than the youngest layer they cut through.</em> RIGHT. A fault is a cut through different layers that occurs when the sedimentary rock breaks transversally. It occurs always after the sedimentary rock is already formed. So the fault is always younger than all the layers it cuts through.

D. Rock layers that have been overturned are oldest from the base to the surface. WRONG. If <u>overturned</u>, according to the superposition low, layers are oldest from the surface to the base. Superposition law states that during the sedimentary rock formation, the oldest layer is always that one at the bottom, while the younger layer is the higher one.

4 0
2 years ago
Where can light travel but not sound
HACTEHA [7]
The answer to your question would be space. The sun's light travles through space. but if you clap, you can't hear it.
8 0
3 years ago
Read 2 more answers
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