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arsen [322]
3 years ago
5

Of the three key building blocks of dna, which type(s) of building block is/are negatively charged and oriented on the outside o

f the double helical structure?
Biology
1 answer:
blondinia [14]3 years ago
7 0
Are you from connections academy
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Early coal miners used canaries in cages as an early warning system to detect dangerous air
blagie [28]

Answer:

Because the Arctic glacier is crucial in cooling the land.

Explanation:

The glaciers contained in the Arctic are essential for cooling the earth's climate, which is why Arctic conditions are so important in determining the earth's climate changes.

These glaciers reflect about 80% of the sunlight in the northern hemisphere, and can cool the region's climate. If Arctic glaciers melt, most of the sun's rays will be absorbed by the ocean, increase the temperature and increase the melting of the glaciers.

As a result, the entire ecosystem will be damaged.

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3 years ago
Suppose a point mutation, such as a change from an adenine to a guanine, occurs in the genome of a human sperm cell. The mutatio
yulyashka [42]

Answer:

B. The mutation results in a new, dominant allele

C. The mutation occurs in a gene that controls development and alters differentiation of a cell type during development.

D. The mutation occurs in a codon and alters the function of the final protein

Explanation:

All the above things will change the <u>ultimate expression</u> or phenotype by altering the proteins. Choices B, C, and D will all change the outer functioning.

Choice A only affects the rate of transcription, so it may go faster or slower, but the end product will be the same.

This part that doesn't look like it's one of the choices ("The mutation occurs in a portion of an intron not responsible for exon splicing.") would not affect phenotype, because introns are removed before the RNA is sent out.

Choice E says that the amino acid sequence is unchanged, meaning the protein final product will be the same and the expression will not change.

7 0
3 years ago
NEVERMIND I GOT IT FREE PTS
e-lub [12.9K]
I also think it is c
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How will virtual learning help you grow as a student?​
Ann [662]

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Virtual learning will help me grow as a student by forcing me to step out of my comfort zone and explore different learning opportunities. Learning online is a challenge that I hope to overcome. Even though school will be very different, I know that this is just a learning curve that will help me become a better student and person overall.

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Would there be any serious impact to the world if ticks went extinct?
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Nope, because they serve no purpose on earth 
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