Question 1 of 20

5.0 Points

Natural polymers are found in:

A. plants.

B. animals.

C. hair.

D. All of the above

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Mark for Review What’s This? Question 2 of 20

5.0 Points

Clothes, carpet, automobiles, and cell phones all rely on:

A. wood.

B. polymers.

C. carbon fibers.

D. copper.

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Mark for Review What’s This? Question 3 of 20

5.0 Points

Which of the following polymers contribute to the construction of plumbing pipe?

A. Polyethylene (HDPE)

B. Polystyrene

C. Polypropylene

D. Polyvinyl chloride

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Mark for Review What’s This? Question 4 of 20

5.0 Points

Which of the following is NOT made of synthetic polymers?

A. In-line skates

B. Tennis balls

C. Football pants

D. Paper

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Mark for Review What’s This? Question 5 of 20

5.0 Points

A bond between amino acid residues in proteins and monomers in nylon is called a/an:

A. hydrogen bond.

B. peptide bond.

C. ionic bond.

D. None of the above

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Mark for Review What’s This? Question 6 of 20

5.0 Points

Molecules are found in a very random arrangement in a(n) __________ polymer.

A. amorphous

B. crystalline

C. thermoplastic

D. addition

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Mark for Review What’s This? Question 7 of 20

5.0 Points

Which of the following is a characteristic of paper cups?

A. Easy recycling potential

B. Reusable

C. Uses fewer raw materials than styrofoam cups

D. Slowly biodegradable

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Mark for Review What’s This? Question 8 of 20

5.0 Points

Most of the drugs of today contain the element:

A. oxygen.

B. carbon.

C. hydrogen.

D. water.

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Mark for Review What’s This? Question 9 of 20

5.0 Points

What is the drug that is used by most Americans and is termed the “wonder drug”?

A. Morphine

B. Aspirin

C. Anabolic steroids

D. RU-486

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Mark for Review What’s This? Question 10 of 20

5.0 Points

__________ are different compounds with the same formula and the same number and kinds of atoms.

A. Isomers

B. Isotopes

C. Functional groups

D. Antipyretics

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Mark for Review What’s This? Question 11 of 20

5.0 Points

What are pain-reducing properties of a compound called?

A. Alcohol

B. Isomers

C. Analgesics

D. Antipyretics

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Mark for Review What’s This? Question 12 of 20

5.0 Points

Aspirin reduces the production of prostaglandins, which are hormone-like substances that regulate the production of acid and mucus in the stomach and:

A. increase fever and swelling.

B. retard kidney functions.

C. decrease sensitivity of pain receptors.

D. promote blood vessel dilation.

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Mark for Review What’s This? Question 13 of 20

5.0 Points

__________ is a mixture consisting of equal amounts of each optimal isomer.

A. Racemic

B. Chiral

C. Rotate polarized light

D. Dextrorotary

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Mark for Review What’s This? Question 14 of 20

5.0 Points

What is the steroid that regulates secondary sexual characteristics?

A. Progesterone

B. Cortisol

C. Estradiol

D. Cholesterol

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Mark for Review What’s This? Question 15 of 20

5.0 Points

The main function of the steroid cortisol is to:

A. control reproductive cycle.

B. regulate metabolism.

C. digest fat.

D. regulate sex hormones.

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Mark for Review What’s This? Question 16 of 20

5.0 Points

What is the most abundant steroid in the body?

A. Sex hormones

B. Cholesterol

C. Cortisone

D. Cholic acid

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Mark for Review What’s This? Question 17 of 20

5.0 Points

In order to be classified as a Schedule I drug under the Controlled Substance Act, a drug must have which of the following characteristics?

A. Accepted medical use and low potential for abuse

B. Current accepted medical use and medium potential for abuse

C. Current accepted medical use and high potential for abuse

D. No current accepted medical use and high potential for abuse

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Mark for Review What’s This? Question 18 of 20

5.0 Points

What is a generic drug?

A. The drug, Valium, which is used for anti-anxiety.

B. The first version of a drug marketed under a brand name.

C. The second version of a pioneer drug that is thought to be of better quality and more effective by most customers.

D. An identical pioneer drug that cannot be marketed until patent protection on the original pioneer drug runs out.

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Mark for Review What’s This? Question 19 of 20

5.0 Points

What is a natural way to rid the lungs of excess secretions?

A. Hiccuping

B. Sleeping

C. Coughing

D. Shallow breathing

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Mark for Review What’s This? Question 20 of 20

5.0 Points

Which of the following herbs is recommended for reducing symptoms of stress, anxiety, and insomnia?

A. Siberian ginseng

B. St. John’s wort

C. Kava kava

D. Passion flower  

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Mark for Review What’s This?

   

part 2 A __________ is the combination of base, a deoxyribose molecule, and a phosphate group.

A. chromosome

B. genome

C. DNA strand

D. nucleotide

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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.

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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

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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

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Mark for Review What’s This? Question 6 of 20

5.0 Points

All enzymes are:

A. sugars.

B. proteins.

C. phosphates.

D. glycogens.

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Mark for Review What’s This? Question 7 of 20

5.0 Points

Bacteria contain rings of __________ called plasmids.

A. molecules

B. hydrocarbon

C. DNA

D. cells

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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.

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Mark for Review What’s This? 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.

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Mark for Review What’s This? 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

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Mark for Review What’s This? 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.

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Mark for Review What’s This? 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.

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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.  

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