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rewona [7]
3 years ago
14

Which of the following could be a nucleotide of DNA?

Biology
2 answers:
dsp733 years ago
8 0
A) Deoxyribose + phosphate group + thymine
natulia [17]3 years ago
5 0

Answer:

A

Explanation:

Deoxyribosenucleic acid (DNA) is one of the two types of nucleic acids, the other being RNA. DNA is a polymer called polynucleotide made up of subunits called NUCLEOTIDE. Each nucleotide is made up of components that make up its structure. These components are:

1. A five-carbon sugar, which can be Deoxyribose or ribose depending on whether it is present in DNA or RNA respectively. The difference in the two sugars is the deficiency of one oxygen atom in deoxyribose.

2. Phosphate group with the structure PO3 (4-)

3. Nitrogenous bases, which are four in number viz: Adenine, Guanine, Cytosine and Thymine/Uracil. Thymine is only present in DNA while Uracil is only present in RNA.

Hence, the answer to the question is Deoxyribose, phosphate and Thymine (nitrogenous base).

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How does natural selection lead to the evolution of a species?
serious [3.7K]

Answer:

One of these is natural selection, which is a process that increases the frequency of advantageous gene variants, called alleles, in a population. Natural selection can result in organisms that are more likely to survive and reproduce and may eventually lead to speciation.

Explanation:

7 0
3 years ago
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Which two animals use echolocation? bats and humans bats and dolphins dolphins and humans dolphins and butterflies.
Mandarinka [93]

The two animals which use echolocation are bats and dolphins.

Both hunt their prey by articulating high-pitched sounds and listening for the echoes.

<h3>What is echolocation?</h3>

Echolocation is a method used by bats, dolphins and other animals to select the location of objects using reflected sound. This allows the animals to move around in pitch darkness, so they can guide, hunt, identify friends and enemies, and avoid obstacles.

Thus, bats and dolphins are two animals that use echolocation.

To learn more about echolocation click here:

brainly.com/question/3942501

6 0
2 years ago
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Homeostasis is a term which describes the process whereby the body ________.
rjkz [21]
<span>maintains a constant INTERNAL environment
so other options included internal variable and external environment. but its internal and environment</span>
3 0
3 years ago
Question 1 of 34
Andrej [43]

Answer:

A

Explanation:

The Answer is A.

Some people consider peat to be non-renewable because it accumulates very slowly – a millimeter a year.

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How do scientific theories compare to hypotheses? a Theories are the same as hypotheses. b Theories unify a broad range of obser
Maslowich

Answer:

b. Theories unify a broad range of observations and hypotheses.

Explanation:

In broad terms, theories are the set of principles that can or must be used to explain certain phenomena. It involves the involvement or inclusion of any set of principles to get to a conclusion.

Hypothesis, on the other hand, is just a term used for an assumption made. And this assumption may be made even before any observation has been done, a mere suggestion for how to proceed with things or an assumption about things.

Thus, scientific theories unify a broader range of observations that had been done, including any hypothesis. So, the <u>correct answer is option b</u>.

5 0
3 years ago
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