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fredd [130]
2 years ago
9

DNA and RNA are structurally similar but also have some notable differences. RNA has uracil in place of thymine as one of its ba

ses, uses ribose in place of deoxyribose, and
Question 4 options:


A)
can't form base pairs.


B)
has a different phosphate group in its backbone.


C)
is a polymer of nucleotides and amines.


D)
often exists as a single-stranded molecul
Biology
1 answer:
aksik [14]2 years ago
7 0

Answer:

D.) often exists as a single-stranded molecule

Explanation:

One notable difference between DNA and RNA is that DNA consists of 2 nucleotide strands and RNA consists of 1.

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A biologist has been studying two populations of trout in Montana for the last 25 years, when the two populations were establish
ludmilkaskok [199]

Answer:

Positive natural selection.

Explanation:

The positive natural selection is a type of natural selection that increases the frequency of an allele or trait when it is advantageous for the population. What happened in the example is that the mouth with the slight change in  morphology (trait)  was more advantageous for the population in the south in relation to the  ancestral morphology  (still preserved in the population in the north), and therefore its frequency increased. This, in turn, is due to the fact that the food (prey) is not the same in the two habitats (north and south).  The specific prey in the south,  caused the new morphology to be selected, (increasing the frequency of individuals with the new mouth),  becasue probably that trait allows the trouts in the south to hunt more effectively.

8 0
3 years ago
Which of the following statements best describes cellular respiration?
Kobotan [32]

Answer:

A cellular respiration occurs in animal cells but not plant cells

Explanation:

photosynthesis occurs in plant cells

4 0
3 years ago
Read 2 more answers
What is the width of small intestine
agasfer [191]

Answer:

The small intestine is about 20 feet (6 meters) long and folds many times to fit in the abdomen. Although it is longer than the large intestine, it is called the small intestine because it is smaller in width.

I hope this will help you

5 0
3 years ago
Read 2 more answers
For each moleule of glucose that is metabolized by glycolysis and the citric acid cycle, what is the total number of NADH + FADH
vesna_86 [32]

Answer:

The answer is B- 12

Explanation:

The glycolysis of one glucose molecule produces two acetyl CoA molecules, the reactions in the glycolytic pathway and citric acid cycle produce six CO2 molecules, ten (10) NADH molecules, and two (2) FADH2 molecules per glucose molecule. Therefore the total number of NADH + FADH2 molecules produced is 12.

3 0
3 years ago
plant species A has two alleles for leaf color. if plant species B has four alleles for leaf color, how will the two species dif
Yanka [14]

Plant A would have one allele from each parent, so the leaf color will be the dominant one.

Plant B would have a more complex percentage for traits. And it'll probably "cancel-out" some alleles only showing the info given in one of them.



Hope it helped,



BioTeacher101

6 0
3 years ago
Read 2 more answers
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