The many prevalent negative charge top top DNA deserve to be found on which of the complying with molecular components?


Explanation:

The phosphate backbone that DNA is negatively charged as result of the binding created between the phosphorous atoms and the oxygen atoms. Each phosphate group consists of one negatively fee oxygen atom, thus the whole strand that DNA is negative charged because of repeated phosphate groups. 


Explanation:

Nitrogen is important to create all the main point acids, and phosphorous is crucial to create phospholipids (an noticeable choice), ATP and ADP (they room the same class of molecule, and also the P means phosphate), and DNA (for the phosphate-sugar backbone).

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Explanation:

DNA is a polymer composed of nucleotide monomers. Every nucleotide is formed from a deoxyribose sugar, a phosphate, and also a nitrogenous base. There are two species of nitrogenous bases: purines and pyrimidines. The purines are adenine and also guanine, if the pyrimidines room thymine and also cytosine (and uracil). Adenin will always bind thymine and cytosine will constantly bind guanine. Uracil is only discovered in RNA, and is absent 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 to secure the nucleotide to the layout strand. The protein DNA ligase then fuses the sugar-phosphate teams of adjacent nucleotides to develop the DNA backbone. This bonds are recognized as phosphodiester bonds.

The just false statement comes to the identity of bonding in between nitrogenous bases. Bases are held together by hydrogen bonds, and the DNA backbone is organized together by phosphodiester bonds.


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Example concern #24 : Dna and Rna structure


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


Possible Answers:

covalent


weak


hydrogen


metallic


ionic


Correct answer:

covalent


Explanation:

The bond formed in between the sugar of one nucleotide and also the phosphate of an nearby nucleotide is a covalent bond. A covalent link is the share of electrons in between atoms. A covalent link is stronger than a hydrogen bond (hydrogen bonds host pairs of nucleotides with each other on the opposite strands in DNA). Thus, the covalent link is an important to the backbone that the DNA. 


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Example inquiry #25 : Dna and Rna structure


Which of the following nitrogenous bases is used to produce RNA, yet not DNA?


Possible Answers:

Guanine


Thymine


Adenine


Uracil


Correct answer:

Uracil


Explanation:

Uracil is bound to adenin in the manufacturing of RNA, when thymine is used in its ar in the manufacturing of DNA. Adenine, guanine, and cytosine room all used in the production of both RNA and also DNA.


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Example inquiry #26 : Dna and Rna structure


How many full hydrogen bonds would certainly there be between base bag of a item of DNA if the sequence of one side was CGTTTGAC?


Possible Answers:

*


*



*


*


Correct answer:


Explanation:

Cytosine and also guanine form three hydrogen bonds between each other, while tyrosine and adenine form two hydrogen bonds. We merely need to count how plenty of of every base we have and multiple cytosine and also guanine through 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 concern #27 : Dna and also Rna structure


What element would girlfriend NOT uncover in one of two people DNA, or RNA?


Possible Answers:

Nitrogen


Carbon


Phosphorus


Hydrogen


Potassium


Correct answer:

Potassium


Explanation:

DNA and RNA room made the nucleotides, which contain oxygen, hydrogen, nitrogen, carbon, and phosphorus. The nucleic acid backbone is made up of sugars, do of carbon, hydrogen, and also oxygen, and also phosphate groups, made of phosphorus, hydrogen, and oxygen. The backbone binds to bases, which contain a nitrogen element.

Potassium is not uncovered in nucleic mountain structure, and is offered in various other parts of the body prefer muscles and nerves for signal propagation.


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Example inquiry #28 : Dna and Rna framework


What room the materials of a nucleoside?


Possible Answers:

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


A ribose or deoxyribose sugar and also a phosphate


A nitrogenous base and a ribose or deoxyribose sugar


A nitrogenous base and a phosphate


Correct answer:

A nitrogenous base and a ribose or deoxyribose sugar


Explanation:

This question is mostly around the differentiations between a nucleoside and also 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 a phosphate describe a nucleotide. Remember the nucleosides space incomplete nucleotides, and lack a phosphate group.


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Example inquiry #29 : Dna and also Rna framework


Which that the adhering to is a reason that cytosine pairs more favorably with guanine 보다 thymine or adenine?


Possible Answers:

Bond energy is maximized


Maximized number of hydrogen bonds


Ionic interactions in between the bases


A covalent shortcut is formed


Correct answer:

Maximized variety of hydrogen bonds


Explanation:

Cytosine and guanine, when base paired, have three hydrogen bonds in between them. Adenine and also thymine only have actually two. This extra hydrogen link helps make the cytosine-guanine pair favorable because it increases stability, and reduces link energy.

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

See more: Breakdown: Why Can You See Your Breath On A Cold Morning, Why Can You See Your Breath When Its Not Cold

 


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Example question #30 : Dna and Rna structure


Chargaff is credited with i m sorry of the complying with discoveries about DNA base pairs?


Possible Answers:

The proportion of adenine to guanine is near to 

*
 and the ratio of cytosine to thymine is nearby to 
*


The proportion of adenin to cytosine is close come

*
 and the ratio of guanine come thymine is near to 
*


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


Correct answer:

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


Explanation:

Due to DNA"s double-helical structure, the nucleotide bases space paired. Adenine is paired with thymine and guanine is paired v cytosine. Chargaff found that there is commonly an equivalent number of adenine and thymine bases, and an equivalent number of guanine and cytosine bases. In a offered sample that DNA, all adenine residues will have thymine counterparts top top the complementary strand, and also all cytosine residues will have actually complementary guanine counterparts. As a result, there will be equal numbers of each residue of the base pair in any type of sample the double-stranded DNA.


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