Natural polymers are found in:

Question 1 of 20

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A. plants.

B. animals.

C. hair.

D. All of the above

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Question 2 of 20

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

A. wood.

B. polymers.

C. carbon fibers.

D. copper.

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Question 3 of 20

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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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Question 4 of 20

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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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Question 5 of 20

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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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Question 6 of 20

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

A. amorphous

B. crystalline

C. thermoplastic

D. addition

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Question 7 of 20

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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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Question 8 of 20

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Most of the drugs of today contain the element:

A. oxygen.

B. carbon.

C. hydrogen.

D. water.

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Question 9 of 20

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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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Question 10 of 20

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__________ 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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Question 11 of 20

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What are pain-reducing properties of a compound called?

A. Alcohol

B. Isomers

C. Analgesics

D. Antipyretics

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Question 12 of 20

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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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Question 13 of 20

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__________ 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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Question 14 of 20

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What is the steroid that regulates secondary sexual characteristics?

A. Progesterone

B. Cortisol

C. Estradiol

D. Cholesterol

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Question 15 of 20

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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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Question 16 of 20

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What is the most abundant steroid in the body?

A. Sex hormones

B. Cholesterol

C. Cortisone

D. Cholic acid

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Question 17 of 20

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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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Question 18 of 20

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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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Question 19 of 20

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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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Question 20 of 20

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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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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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Question 2 of 20

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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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Question 3 of 20

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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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Question 4 of 20

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Before a cell __________, the double helix partially and rapidly unwinds.

A. dies

B. divides

C. replicates

D. bonds

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Question 5 of 20

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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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Question 6 of 20

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All enzymes are:

A. sugars.

B. proteins.

C. phosphates.

D. glycogens.

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Question 7 of 20

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Bacteria contain rings of __________ called plasmids.

A. molecules

B. hydrocarbon

C. DNA

D. cells

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Question 8 of 20

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DNA __________ utilize(s) unique fragments of DNA to identify a specific individual.

A. sourcing

B. fingerprinting

C. analysis

D. probes

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Question 9 of 20

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__________ 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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Question 10 of 20

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Before __________ there was no hepatitis B vaccine.

A. transgenic modifications

B. recombinant DNA

C. electrophoresis

D. DNA probes

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Question 11 of 20

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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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Question 12 of 20

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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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Question 13 of 20

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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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Question 14 of 20

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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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Question 15 of 20

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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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Question 16 of 20

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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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Question 17 of 20

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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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Question 18 of 20

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The molecule with its reaction catalyzed by an enzyme is the:

A. catalyst.

B. active site.

C. substrate.

D. coenzyme.

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Question 19 of 20

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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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Question 20 of 20

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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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