The many prevalent negative charge ~ above DNA have the right to be found on i beg your pardon of the following molecular components?


Explanation:

The phosphate backbone of DNA is negative charged because of the binding created in between the phosphorous atoms and the oxygen atoms. Each phosphate group has one negatively charged oxygen atom, as such the whole strand of DNA is negative charged due to repeated phosphate groups. 


Explanation:

Nitrogen is necessary to develop all the main point acids, and phosphorous is essential to create phospholipids (an apparent choice), ATP and ADP (they are the same course of molecule, and the P means phosphate), and DNA (for the phosphate-sugar backbone).

You are watching: How many hydrogen bonds are between adenine and thymine


Explanation:

DNA is a polymer composed of nucleotide monomers. Each nucleotide is created from a deoxyribose sugar, a phosphate, and a nitrogenous base. There space two types of nitrogenous bases: purines and pyrimidines. The purines space adenine and guanine, when the pyrimidines are thymine and cytosine (and uracil). Adenin will constantly bind thymine and also cytosine will always 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 correctly paired. The bases tie to one various other via hydrogen bonding come secure the nucleotide to the template strand. The protein DNA ligase then fuses the sugar-phosphate teams of surrounding nucleotides to create the DNA backbone. This bonds are known as phosphodiester bonds.

The just false statement involves the identification of bonding in between nitrogenous bases. Bases are held together by hydrogen bonds, and the DNA backbone is hosted together through 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 the an surrounding nucleotide stabilizes the backbone of the DNA. 


Possible Answers:

ionic


metallic


weak


covalent


hydrogen


Correct answer:

covalent


Explanation:

The shortcut 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 sharing of electrons between atoms. A covalent shortcut is stronger than a hydrogen bond (hydrogen bonds hold pairs that nucleotides with each other on the opposite strands in DNA). Thus, the covalent link is an essential to the backbone the the DNA. 


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Example concern #21 : Dna and also Rna framework


Which of the complying with nitrogenous bases is provided to create RNA, but not DNA?


Possible Answers:

Adenine


Thymine


Guanine


Uracil


Correct answer:

Uracil


Explanation:

Uracil is bound to adenine in the manufacturing of RNA, if thymine is supplied in its place in the manufacturing of DNA. Adenine, guanine, and also cytosine room all provided in the manufacturing of both RNA and also DNA.


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Example question #21 : Dna and also Rna framework


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


Possible Answers:

*


*



*


*


Correct answer:


Explanation:

Cytosine and guanine kind three hydrogen bonds between each other, when tyrosine and also adenine type two hydrogen bonds. We just need to counting how numerous of every base us have and also multiple cytosine and also guanine by three, and thymine and adenine through two.

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

*


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Example inquiry #3 : understanding Nucleotides and Base bag


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


Possible Answers:

Hydrogen


Carbon


Potassium


Phosphorus


Nitrogen


Correct answer:

Potassium


Explanation:

DNA and also RNA are made that nucleotides, i m sorry contain oxygen, hydrogen, nitrogen, carbon, and phosphorus. The nucleic mountain backbone is consisted of of sugars, make of carbon, hydrogen, and also oxygen, and also phosphate groups, made of phosphorus, hydrogen, and oxygen. The backbone binding to bases, i beg your pardon contain a nitrogen element.

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


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Example inquiry #4 : understanding Nucleotides and Base bag


What are the materials of a nucleoside?


Possible Answers:

A nitrogenous base and also a phosphate


A ribose or deoxyribose sugar and also a phosphate


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


A nitrogenous base and also a ribose or deoxyribose sugar


Correct answer:

A nitrogenous base and also a ribose or deoxyribose sugar


Explanation:

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


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Example question #22 : Dna and Rna structure


Which of the adhering to is a factor that cytosine pairs an ext favorably v guanine 보다 thymine or adenine?


Possible Answers:

A covalent link is formed


Maximized variety of hydrogen bonds


Bond energy is maximized


Ionic interactions in between the bases


Correct answer:

Maximized number of hydrogen bonds


Explanation:

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

Ionic and also covalent bonds carry out not occur between nitrogenous bases in DNA. Covalent bonds are found in the DNA backbone (known together phosphodiester bonds).

 


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Example inquiry #6 : expertise Nucleotides and also Base bag


Chargaff is attributed with i m sorry of the complying with discoveries around DNA basic pairs?


Possible Answers:

The proportion of adenin to guanine is close to 

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


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


The ratio of adenin to cytosine is close come

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


Correct answer:

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


Explanation:

Due come DNA"s double-helical structure, the nucleotide bases are paired. Adenin is paired through thymine and guanine is paired v cytosine. Chargaff uncovered that over there is typically an equivalent variety of adenine and thymine bases, and also an equivalent variety of guanine and also cytosine bases. In a given sample of DNA, all adenine residues will have thymine counterparts on the complementary strand, and also all cytosine residues will have complementary guanine counterparts. Together a result, there will be equal numbers of each residue of the base pair in any kind of sample the double-stranded DNA.

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