Week 8 ch 18
the number of amino acids that define the difference in shape between a normal hemoglobin molecule and that of a sickle-cell anemia patient is
1
according to the text, the number of amino acids that a human body cannot synthesize is
10
How many hydrogen bonds join an adenine (a) base and thymine (t) base in the DNA double helix?
2
How many strands of nucleotides compose a molecule of DNA?
2
the number of amino acids that are used to build all proteins is
20
How many hydrogen bonds join a cytosine (c) base and a guanine (g) base in the DNA double helix?
3
Which of the following statements about a DNA molecule is incorrect?
Complementary bases in DNA molescules are held together by covalent bonds
What is the complementary DNA strand of ATCGATT?
TAGCTAA
DNA molecules contain "codes" from which proteins and other materials can eventually be synthesized
True
Through the "genetic engineering" of a human DNA, it is hoped that someday a wide variety of diseases can be prevented or cured
True
DNA molecules, as found in human cells, are best described as
a large, double-stranded molecule that contains phosphate groups, carbohydrate units, and amine bases
Which of the following is not an amine base present in DNA?
alanine
which of the following may be classified as a natural biopolymer?
all of the above
which of the following is a water-soluble vitamin?
all of the above (B12, B2, B3, B1)
Which of the following is characteristic of lipid fat?
all of the above (animal source, water insoluble, semisolid, saturdated fatty acids)
Which of the following is a characteristic of a lipid oil?
all of the above (liquid, unsaturdated fatty acids, water insoluble, plant source)
Which of the following is found in a lipid wax?
all of the above (long-chain alcohol, fatty acid, ester linkage)
Which of the following is found in a lipid fat or oil?
all of the above (unsaturated fatty acids, saturdated fatty acids, ester linkages, glycerol)
which of the following is a fat-soluble vitamin?
all of the above (vitamin k, a, e, d)
The bond found in Nylon-66 is a(n) __________ bond
amide
what type of biological compound is characterized by a carboxylic acid and an amine functional group?
amino acid
what is the term for the study of biological compounds?
biochemistry
which is/are the starting reagent(s) required for the synthesis of Nylon 66?
both A and B (hexanedioic acid chloride and 1,6-diaminohexane)
what type of biological compound is composed of sugar molecules?
carbohydrates
PVC
chloroethene
The monomer of a PVC is
chloroethene
What is the term for two amino acids joined by an amide bond?
dipeptide
what is the term for a carbohydrate composed of two simple sugar molecules?
disaccharide
what is the term for a protein that catalyzes a biochemical reaction?
enzyme
polyethylene
ethene
all amino acids are made of only carbon, hydrogen and oxygen atoms
false
human DNA molecules consist of just a single strand, just like protein molecules
false
sucrose is the smallest building block for carbohydrates
false
teflon is synthesized with a monomer containing carbons and chlorines
false
What type of biological compound is characterized by a carboxylic acid as its only functional group?
fatty acid
What is the repeating monomer found in cellulose?
glucose
What is the repeating monosaccharide in cellulose?
glucose
What is the repeating monosaccharide in glycogen?
glucose
what is the repeating monosaccharide in starch?
glucose
nylon
hexanedioic acid and 1,6-diaminohexane
What intermolecular force joins strands of DNA in the double helix?
hydrogen bonds
Which type of biological compound is a steroid hormone, such as testosterone and progesterone?
lipid
Which type of biological compound is a steroid, such as cholesterol?
lipid
what type of biological compound is characterized by ester functional groups?
lipid
Which of the following amino acids is basic?
lysine
what type of biological compound is characterized by alcohol and amine functional groups?
nucleic acid
the name of the bond that combines two amino acids together is called
peptide
poly(propylene oxide)
propylene oxide
an enzyme is an example of which type of biological compound?
protein
what type of biological compound is a polymer of amino acids?
protein
Which of the following is a polysaccharide?
starch
What type of biological compound is characterized by an aldehyde or ketone and alcohol functional groups?
sugar
teflon
tetrafluoroethene
teflon's monomer is
tetrafluoroethene
the essential amino acids are
the amino acids that the body cannot synthesize
Which of the following is not an amino acid?
thymine
Viruses are not, technically, truly living organisms
true
amino acids are the smallest building blocks for proteins
true
it is possible to "splice" (add or subtract) specific pieces of DNA between two different types of living organisms
true
polymers are very large molecules
true
