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3 years ago

What is the basic unit of a nucleic acid and what is it made of?

Biology

2 answers:

Dmitry [639]3 years ago

6 0

Answer:

Basic structure Nucleic acids are polynucleotides—that is, long chainlike molecules composed of a series of nearly identical building blocks called nucleotides. Each nucleotide consists of a nitrogen-containing aromatic base attached to a pentose (five-carbon) sugar, which is in turn attached to a phosphate group.

Explanation:

riadik2000 [5.3K]3 years ago

4 0

The basic repeating unit of nucleic acids are known as nucleotides. A nucleotide consists of three distinct chemical groups, a 5-carbon sugar (ribose or deoxyribose), a nitrogen-rich base - (cytosine (C), guanine (G), adenine (A), thymine (T) in DNA or uracil (U) instead of T (in RNA), and phosphate.

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olga nikolaevna [1]

High copper tolerance is found in the flowers found near copper mines.

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3 years ago

In which part of the eye are cones and rods located?

AlekseyPX

Answer:

The retina

Explanation:

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3 years ago

When is facilitated diffusion necessary?

yanalaym [24]

Answer:

It is option C I think.. Not so sure but I think it's the right answer

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3 years ago

Was quantitative data collected ? Explain.

Viktor [21]

Answer:

As quantitative data collection methods are often based on mathematical calculations, the data obtained that way is usually seen as more objective and reliable than qualitative. Some of the most common quantitative data collection techniques include surveys and questionnaires (with closed-ended questions).

Explanation:

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3 years ago

within a forest ecosystem, there is a large amount of diversity among members of a warbler species. of the following stages of m

anzhelika [568]

Crossing over occurs between homologous chromosomes, and is closely involved in genetic variation. The stage that most contributes to diversity is stage C, where you can see chromosomes after crossing-over.

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There are different mechanisms involved in producing genetic variation among descendants. These are,

Crossing-over between homologous chromosomes (prophase 1),

Random lining of homologous chromosomes (metaphase 1),

Random fertilization

The Crossing-over events occur between two homologous chromosomes in the equatorial plane and make the daughter cells genetically different from the original one.

The Chiasma is the position where two homologous chromatids interchange genetic information, giving a place for new genetic material or information to be provided to descendants.

After crossing over, homologous chromosomes get separated again.

In the attached imaged there are four different stages of meiosis.

Stage C is the one that contributes the most to diversity.

We can see that crossing over has already occurred between homologous chromosomes, and they have already interchanged segments.

In the image you will see the difference between chromosomes that has gone through the crossing over mechanism, and chromosomes that has not. The difference in color represents segments interchange and variation.

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You can learn more about crossing over at

brainly.com/question/12911831?referrer=searchResults

brainly.com/question/394891?referrer=searchResults

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2 years ago