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Radda [10]
3 years ago
8

Chargaff's rules of base pairing are explained by which structural feature of DNA? A. Each strand of DNA contains a phosphate an

d sugar backbone. B. The nucleotides of DNA may appear in a wide variety of sequences. C. DNA is double stranded, and covalent bonds between identical nucleotides hold the strands together. D. DNA is double stranded, and hydrogen bonds between base pairs hold the strands together.
Biology
2 answers:
laila [671]3 years ago
8 0

Answer:

C

Explanation:

just took the quiz

solong [7]3 years ago
5 0

Answer:

Option C. is correct.

Explanation:

According to Chargaff's rules, DNA (Deoxyribonucleic Acid) from any species of an organism should have purine and pyrimidine bases in the ratio 1:1

This ratio is very important for solving the structure of DNA.

As per this rule, DNA is double-stranded, and covalent bonds between identical nucleotides hold the strands together.

So, Option C. is correct.

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3 years ago
Which of the following will lower blood pressure? Which of the following will lower blood pressure? angiotensin II atrial natriu
garik1379 [7]

Answer:

Angiotensin II atrial natriuretic peptide(ANP) lowers blood pressure.

Explanation:

Increase in plasma volume leads to increase in blood pressure and a decrease in plasma level also leads to a decrease in the blood pressure. ANP is an enzyme which stimulates the decrease in blood levels through certain factors thereby causing a decrease in the blood pressure.

Meanwhile ADH stimulates increase in blood plasma levels thereby increasing the blood pressure.

5 0
3 years ago
Read 2 more answers
Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. I
Wewaii [24]

Answer:

D) The lac operon will function normally.

Explanation:

  • The promoter area can be described as the area that causes the transcription to initiate for a particular gene. Promoters may be near the genes from which they initiate transcription or they may display multiple scenes upstream.
  • The lock operon works normally because the promoter area can still enable transcription on many base pairs. Detects repression promoter and works normally.
  • so correct option is D) The lac operon will function normally.

4 0
3 years ago
Explain what would occur between Oceanic crust and continental crust at the subduction plate boundary. (O.C. =more dense)
Reika [66]

Answer:

Oceanic crust is denser than continental crust. At a subduction zone, the oceanic crust usually sinks into the mantle beneath lighter continental crust. (Sometimes, oceanic crust may grow so old and that dense that it collapses and spontaneously forms a subduction zone, scientists think.)

Explanation:

3 0
3 years ago
We identify nucleic acid strand orientation on the basis of important chemical functional groups. These are the _________ group
Alina [70]

Answer: Option B) phosphate; hydroxyl; 3'

We identify nucleic acid strand orientation on the basis of important chemical functional groups. These are the phosphate group attached to the 5' carbon atom of the sugar portion of a nucleotide and the hydroxyl group attached to the 3'

carbon atom

Explanation:

For both RNA and DNA, chemical groups such as phosphate (PO3-) attaches to the 5' carbon of the pentose sugar (deoxyribose in DNA, ribose in RNA).

While hydroxyl group (OH) attaches to the 3' carbon atom of the pentose sugar.

Thus, a nucleic acid structure structure reveals a several repeating units of nucleotides where nitrogenous base links to a pentose sugar, who in turns is linked to phosphate group

5 0
3 years ago
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