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elena55 [62]
3 years ago
6

How are the nucleotides in dna different from those found in rna?.

Biology
1 answer:
777dan777 [17]3 years ago
5 0
The structural difference between nucleotides rests in two instances: A DNA nucleotide contains deoxyribose sugar, whereas an RNA contains the sugar ribose in every nucleotide. ... Unlike DNA, RNA contains a uracil nitrogenous base instead of thymine.
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How does the hormone secretin help in digestion?
Bond [772]
Answer: it stimulates the pancreas and the liver to produce secretions. 


There are a lot of hormone in making a good digestion and is responsible in the process to function properly. Secretin stimulate bicarbonate (base) from the liver and pancreas to promote normal growth and maintenance of the pancreas. It also counteracts the blood glucose that triggers the increase of insulin release and oral glucose intake. It also reduce the gastric juice secreted by the stomach along the digestion.
5 0
3 years ago
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Who first suggested the theory of evolution by natural selection?
grin007 [14]

Answer:

Charles Darwin

Explanation:

Evolution theory is a shortened form of the term "theory of evolution by natural selection," which was proposed in the 19th century by Charles Darwin and Alfred Russel Wallace.

hope this helped!

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4 years ago
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What occurs when solar radiation bounces off a surface?
defon
Is when solar radiation bounces off the water. The amount of sunlight reflected depends on the sun's angle, wavelength, and weather conditions.
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3 years ago
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Are scientific theories absolute truths? Why or why not?
dexar [7]

A scientific theory can always be disproved if someone comes along with better evidence which shows another theory is true. However, most other theories are small improvements on existing ones. Evolution and natural selection (the theory that animals' populations change over time because their environment encourages specific different features for individuals that happen with mutation) was an improvement on the existing "theory" that animals were built to be fit for their environments. The earth rotating around the sun was a theory improving on the idea that the sun and the earth move around so that it looks like the sun moves around the earth. All of these happened because there was evidence, so while theories aren't always absolutely true, many modern theories are typically well-tested and if they aren't, they are usually refered to as hypotheses or models (although models can sometimes also be theories, like the Standard Model)

8 0
4 years ago
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In lab this week we observed a frog dissection. I love the frog dissection because many of the frog's organs look very similar t
Vedmedyk [2.9K]

Answer:

Mouth, esophagus, stomach, small intestine and large intestine.

Explanation:

Digestive system of frog starts in the mouth and ends at the cloaca which means the enzymes present in the mouth start break down of food eaten by the frog. After food enters the mouth, it goes to the esophagus and then to the stomach. From there, it forwarded to the small intestine, where food becomes broken down and all nutrients extracted from it. it then goes to the  large intestine, which absorbs remaining water.

8 0
3 years ago
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