Solution-What is the most abundant steroid in the body | Homework Helpers

Part 1:

Question 1
Natural polymers are found in:
A. plants.
B. animals.
C. hair.
D. All of the above

Question 2
Clothes, carpet, automobiles, and cell phones all rely on:
A. wood.
B. polymers.
C. carbon fibers.
D. copper.

Question 3
Which of the following polymers contribute to the construction of plumbing pipe?
A. Polyethylene (HDPE)
B. Polystyrene
C. Polypropylene
D. Polyvinyl chloride

Question 4
Which of the following is NOT made of synthetic polymers?
A. In-line skates
B. Tennis balls
C. Football pants
D. Paper

Question 5
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

Question 6
Molecules are found in a very random arrangement in a(n) __________ polymer.
A. amorphous
B. crystalline
C. thermoplastic
D. aIDition

Question 7
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

Question 8
Most of the drugs of today contain the element:
A. oxygen.
B. carbon.
C. hydrogen.
D. water.

Question 9
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

Question 10
__________ are different compounds with the same formula and the same number and kinds of atoms.
A. Isomers
B. Isotopes
C. Functional groups
D. Antipyretics

Question 11
What are pain-reducing properties of a compound called?
A. Alcohol
B. Isomers
C. Analgesics
D. Antipyretics

Question 12
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.

Question 13
__________ is a mixture consisting of equal amounts of each optimal isomer.
A. Racemic
B. Chiral
C. Rotate polarized light
D. Dextrorotary

Question 14
What is the steroid that regulates secondary sexual characteristics?
A. Progesterone
B. Cortisol
C. Estradiol
D. Cholesterol

Question 15
The main function of the steroid cortisol is to:
A. control reproductive cycle.
B. regulate metabolism.
C. digest fat.
D. regulate sex hormones.

Question 16
What is the most abundant steroid in the body?
A. Sex hormones
B. Cholesterol
C. Cortisone
D. Cholic acid

Question 17
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

Question 18
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.

Question 19
What is a natural way to rid the lungs of excess secretions?
A. Hiccuping
B. Sleeping
C. Coughing
D. Shallow breathing

Question 20
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

Part 2:

Question 1
A __________ is the combination of base, a deoxyribose molecule, and a phosphate group.
A. chromosome
B. genome
C. DNA strand
D. nucleotide

Question 2
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.

Question 3
In a DNA model, the alternating __________ and phosphate groups are represented on the two twisted ribbons.
A. thymine
B. guanine
C. sugar
D. cytosine

Question 4
Before a cell __________, the double helix partially and rapidly unwinds.
A. dies
B. divides
C. replicates
D. bonds

Question 5
The overall shape or conformation of the protein molecule is termed its __________ structure.
A. tertiary
B. primary
C. secondary
D. substrate

Question 6
All enzymes are:
A. sugars.
B. proteins.
C. phosphates.
D. glycogens.

Question 7
Bacteria contain rings of __________ called plasmids.
A. molecules
B. hydrocarbon
C. DNA
D. cells

Question 8
DNA __________ utilize(s) unique fragments of DNA to identify a specific individual.
A. sourcing
B. fingerprinting
C. analysis
D. probes

Question 9
__________ in cells, but not within cell nuclei, are vital to energy production.
A. Fatty acids
B. Hydrocarbons
C. Mitochondria
D. Proteins

Question 10
Before __________ there was no hepatitis B vaccine.
A. transgenic modifications
B. recombinant DNA
C. electrophoresis
D. DNA probes

Question 11
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

Question 12
Chromosomes consist of __________ compact structures of intertwined molecules of DNA in a human cell nucleus.
A. 39
B. 46
C. 48
D. 52

Question 13
What is the totality of human hereditary information in molecular form called?
A. Chromosome
B. Human genome
C. DNA
D. RNA

Question 14
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

Question 15
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.

Question 16
Organic polymers of amino acids linked together by peptide bonds are called:
A. proteins.
B. codons.
C. genetic codes.
D. DNA bases.

Question 17
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

Question 18
The molecule with its reaction catalyzed by an enzyme is the:
A. catalyst.
B. active site.
C. substrate.
D. coenzyme.

Question 19
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.

Question 20
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.