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Chris M., M.S.W. Social Work
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CHEMISTRY . Please help . i got a 25% . this is a retake .A

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CHEMISTRY . Please help . i got a 25% . this is a retake .

A __________ is the combination of base, a deoxyribose molecule, and a phosphate group.

A. chromosome

B. genome

C. DNA strand

D. nucleotide Reset Selection

Mark for Review What's This?
Question 2 of 20
5.0 Points
The molecular structure of deoxyribonucleic acid dictates:

A. the manner in which chromosomes are organized.

B. the way DNA encodes genetic information.

C. how molecules carry genetic information.

D. how chemical reactions burn food. Reset Selection

Mark for Review What's This?
Question 3 of 20
5.0 Points
In a DNA model, the alternating __________ and phosphate groups are represented on the two twisted ribbons.

A. thymine

B. guanine

C. sugar

D. cytosine Reset Selection

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Question 4 of 20
5.0 Points
Before a cell __________, the double helix partially and rapidly unwinds.

A. dies

B. divides

C. replicates

D. bonds Reset Selection

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Question 5 of 20
5.0 Points
The overall shape or conformation of the protein molecule is termed its __________ structure.

A. tertiary

B. primary

C. secondary

D. substrate Reset Selection

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Question 6 of 20
5.0 Points
All enzymes are:

A. sugars.

B. proteins.

C. phosphates.

D. glycogens. Reset Selection

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Question 7 of 20
5.0 Points
Bacteria contain rings of __________ called plasmids.

A. molecules

B. hydrocarbon

C. DNA

D. cells Reset Selection

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Question 8 of 20
5.0 Points
DNA __________ utilize(s) unique fragments of DNA to identify a specific individual.

A. sourcing

B. fingerprinting

C. analysis

D. probes Reset Selection

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Question 9 of 20
5.0 Points
__________ in cells, but not within cell nuclei, are vital to energy production.

A. Fatty acids

B. Hydrocarbons

C. Mitochondria

D. Proteins Reset Selection

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Question 10 of 20
5.0 Points
Before __________ there was no hepatitis B vaccine.

A. transgenic modifications

B. recombinant DNA

C. electrophoresis

D. DNA probes Reset Selection

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Question 11 of 20
5.0 Points
The biochemists who set out to decipher the genetic code concentrated on translating base language into __________ language.

A. codon

B. substrate

C. amino acid

D. DNA coded Reset Selection

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Question 12 of 20
5.0 Points
Chromosomes consist of __________ compact structures of intertwined molecules of DNA in a human cell nucleus.

A. 39

B. 46

C. 48

D. 52 Reset Selection

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Question 13 of 20
5.0 Points
What is the totality of human hereditary information in molecular form called?

A. Chromosome

B. Human genome

C. DNA

D. RNA Reset Selection

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Question 14 of 20
5.0 Points
What is a nucleotide?

A. The combination of nitrogenous base, sugar, and phosphate group

B. Phosphate units

C. Deoxyribose

D. The combination of deoxyribose and a phosphate group Reset Selection

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Question 15 of 20
5.0 Points
Francis Crick established that genetic code was written in groupings of three DNA bases known as:

A. codons.

B. amino acid residues.

C. complementary bases

D. clonings. Reset Selection

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Question 16 of 20
5.0 Points
Organic polymers of amino acids linked together by peptide bonds are called:

A. proteins.

B. codons.

C. genetic codes.

D. DNA bases. Reset Selection

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Question 17 of 20
5.0 Points
Electrophoresis and __________ have made genetic fingerprinting a highly accurate and viable method for fighting crime.

A. x-ray diffraction

B. nuclear transfer

C. polymerase chain reaction

D. amniocentesis Reset Selection

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Question 18 of 20
5.0 Points
The molecule with its reaction catalyzed by an enzyme is the:

A. catalyst.

B. active site.

C. substrate.

D. coenzyme. Reset Selection

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Question 19 of 20
5.0 Points
Interferons are:

A. proteins that are produced by cells under viral attack.

B. genetically engineered proteins.

C. viruses that attack.

D. proteins that produce carbohydrates when they encounter a virus. Reset Selection

Mark for Review What's This?
Question 20 of 20
5.0 Points
Diabetes is more effectively treated today through the creation of insulin by:

A. sickle-cell anemia.

B. recombinant DNA.

C. polymerase chain reaction.

D. electrophoresis.
Submitted: 1 year ago.
Category: Homework
Expert:  Chris M. replied 1 year ago.
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Chris M., M.S.W. Social Work
Category: Homework
Satisfied Customers: 2491
Experience: Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
Chris M. and 8 other Homework Specialists are ready to help you
Expert:  Chris M. replied 1 year ago.
Hello Cora,

Thanks for your positive rating. Hope you did well on this quiz. Good luck in all your studies!


Customer: replied 1 year ago.

thank you!

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