The many prevalent negative charge top top DNA can be discovered on i m sorry of the adhering to molecular components?


Explanation:

The phosphate backbone of DNA is negative charged as result of the bond created between the phosphorous atoms and also the oxygen atoms. Each phosphate group has one negatively charged oxygen atom, therefore the entire strand of DNA is negative charged because of repeated phosphate groups. 


Explanation:

Nitrogen is vital to produce all the main point acids, and also phosphorous is necessary to produce phospholipids (an noticeable choice), ATP and ADP (they room the same course of molecule, and the P represents phosphate), and DNA (for the phosphate-sugar backbone).

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Explanation:

DNA is a polymer written of nucleotide monomers. Every nucleotide is developed from a deoxyribose sugar, a phosphate, and also a nitrogenous base. There are two species of nitrogenous bases: purines and pyrimidines. The purines space adenine and guanine, when the pyrimidines room thymine and also cytosine (and uracil). Adenine will constantly bind thymine and also cytosine will constantly bind guanine. Uracil is only discovered in RNA, and is lacking from DNA.

During DNA replication and synthesis, nucleotides align so that the nitrogenous bases are effectively paired. The bases tie to one various other via hydrogen bonding come secure the nucleotide come the theme strand. The protein DNA ligase then fuses the sugar-phosphate teams of nearby nucleotides to create the DNA backbone. These bonds are recognized as phosphodiester bonds.

The only false statement concerns the identity of bonding between nitrogenous bases. Bases are organized together by hydrogen bonds, and the DNA backbone is hosted together by phosphodiester bonds.


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Example inquiry #4 : expertise The street Phosphate Backbone


A __________ bond between the street of one nucleotide and the phosphate of an nearby nucleotide stabilizes the backbone the the DNA. 


Possible Answers:

ionic


metallic


weak


covalent


hydrogen


Correct answer:

covalent


Explanation:

The link formed between the street of one nucleotide and also the phosphate the an adjacent nucleotide is a covalent bond. A covalent link is the share of electrons between atoms. A covalent bond is stronger than a hydrogen shortcut (hydrogen bonds host pairs the nucleotides together on the opposite strands in DNA). Thus, the covalent shortcut is vital to the backbone the the DNA. 


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Example inquiry #1 : knowledge Nucleotides and also Base bag


Which the the complying with nitrogenous bases is used to produce RNA, however not DNA?


Possible Answers:

Uracil


Thymine


Adenine


Guanine


Correct answer:

Uracil


Explanation:

Uracil is tied to adenine in the production of RNA, when thymine is used in its location in the manufacturing of DNA. Adenine, guanine, and cytosine space all provided in the manufacturing of both RNA and also DNA.


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Example question #21 : Dna and also Rna structure


How many total hydrogen bonds would certainly there be in between base bag of a piece of DNA if the sequence of one side to be CGTTTGAC?


Possible Answers:

*


*



*


*


Correct answer:


Explanation:

Cytosine and guanine form three hydrogen bonds between each other, if tyrosine and adenine kind two hydrogen bonds. We simply need to count how plenty of of each base we have and also multiple cytosine and guanine by three, and thymine and also adenine by two.

CGTTTGAC has 2 cytosine, 2 guanine, 3 thymine, and also 1 adenine.

*


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Example question #3 : understanding Nucleotides and also Base bag


What element would friend NOT find in either DNA, or RNA?


Possible Answers:

Hydrogen


Carbon


Potassium


Phosphorus


Nitrogen


Correct answer:

Potassium


Explanation:

DNA and RNA space made the nucleotides, which contain oxygen, hydrogen, nitrogen, carbon, and also phosphorus. The nucleic acid backbone is consisted of of sugars, do of carbon, hydrogen, and also oxygen, and also phosphate groups, make of phosphorus, hydrogen, and also oxygen. The backbone binding to bases, i m sorry contain a nitrogen element.

Potassium is not uncovered in nucleic acid structure, and also is provided in other parts the the body choose muscles and nerves because that signal propagation.


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Example inquiry #4 : knowledge Nucleotides and also Base pairs


What are the materials of a nucleoside?


Possible Answers:

A nitrogenous base and a phosphate


A ribose or deoxyribose sugar and a phosphate


A nitrogenous base, a ribose or deoxyribose sugar, and a phosphate group


A nitrogenous base and a ribose or deoxyribose sugar


Correct answer:

A nitrogenous base and a ribose or deoxyribose sugar


Explanation:

This concern is mostly about the differentiations in between a nucleoside and a nucleotide. A nucleoside is written of a nitrogenous base and also a ribose or deoxyribose sugar. A nitrogenous base, a ribose/deoxyribose sugar, and also a phosphate explain a nucleotide. Remember that nucleosides are incomplete nucleotides, and lack a phosphate group.


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Example question #5 : understanding Nucleotides and Base pairs


Which the the complying with is a factor that cytosine pairs an ext favorably with guanine 보다 thymine or adenine?


Possible Answers:

Ionic interactions in between the bases


A covalent bond is formed


Maximized variety of hydrogen bonds


Bond energy is maximized


Correct answer:

Maximized number of hydrogen bonds


Explanation:

Cytosine and guanine, as soon as base paired, have three hydrogen bonds in between them. Adenine and also thymine only have two. This extra hydrogen link helps do the cytosine-guanine pair favorable because it boosts stability, and also reduces bond energy.

Ionic and also covalent bonds execute not occur between nitrogenous bases in DNA. Covalent binding are uncovered in the DNA backbone (known together phosphodiester bonds).

 


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Example question #6 : understanding Nucleotides and also Base pairs


Chargaff is credited with i m sorry of the adhering to discoveries around DNA base pairs?


Possible Answers:

The ratio of adenin to guanine is close to 

*
 and the proportion of cytosine come thymine is close to 
*


The proportion of adenine to thymine is close come  and the ratio of guanine come cytosine is close to 


The ratio of adenin to cytosine is close to

*
 and the proportion of guanine to thymine is near to 
*


Correct answer:

The proportion of adenin to thymine is close come  and the ratio of guanine come cytosine is nearby to 


Explanation:

Due come DNA"s double-helical structure, the nucleotide bases are paired. Adenin is paired through thymine and also guanine is paired with cytosine. Chargaff discovered that there is typically an equivalent variety of adenine and thymine bases, and an equivalent number of guanine and cytosine bases. In a given sample the DNA, all adenine residues will have thymine counterparts on the security strand, and all cytosine residual water will have complementary guanine counterparts. As a result, there will certainly be same numbers of each residue the the base pair in any sample of double-stranded DNA.


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