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Terms in this set (97)
The compound below is named
Inorganic or organic: high melting point
inorganic or organic: flammable
inorganic or organic: covalent bonds
inorganic or organic: insoluble in water
inorganic or organic: ionic bonds
The balanced equation for the complete combustion of C5H12 will give which of these product(s)?
5CO2 + 6H2O
In what kind of amine is the nitrogen directly bonded to two carbon atoms?
What kind of amine can form hydrogen bonds with another molecule (such as water)?
aromatic, tertiary, primary, substituted, and secondary
How do sugars form cyclic hemiacetals?
A molecule of sugar reacts with itself
How many lone pairs of electrons does the oxygen in a carbonyl group have?
Why do carboxylic acids have higher boiling points than similar alcohols or aldehydes?
They form dimers that are relatively stable.
Which of the following is true of nonane, C9H20, which has a density of 0.79 g/mL, melts at -51 °C, and boils at 157 °C?
Nonane floats on the surface of water.
Methanol is toxic because it is ________ by the liver to carboxylic acids.
In a molecule with a symmetrical arrangement of polar bonds, the overall molecule is
Hydrogenation is used to convert alkenes to alkanes.
According to the IUPAC convention for chemical naming, which part of a hydrocarbon is selected as the main chain for a hydrocarbon chain?
the longest continuous chain, regardless of bends
Tertiary alcohols are oxidized to
None of the above.
According to the IUPAC convention, alkyl substituents on a hydrocarbon chain should be listed in which order?
alphabetical without considering prefixes
The carbon atoms in saturated hydrocarbons
have only single bonds.
The reduction of 3-pentanone with hydrogen in the presence of a nickel catalyst will yield
What are the bond angles in a typical carbonyl group?
What is the name of the continuous chain alkane with six carbon atoms?
What kind of intermolecular bonding occurs between carboxylic acids?
The hydrogenation of an alkene gives a(n).
The addition of hydrogen to an organic compound or the loss of oxygen is called
Aldehydes and ketones may be reduced to
How does a molecule of a vitamin synthesized in the laboratory behave when compared to the behavior of the same vitamin isolated from a natural source (e.g., vitamin C synthesized, compared to vitamin C from rose hips)?
identical in every way
Thiols are strong-smelling compounds responsible for
skunky or bad smelling odors.
An unsaturated compound always
contains at least one double or triple bond
How many carbonyl-containing isomers does the formula C3H6O have?
Secondary alcohols are oxidized to
Which of the following would not be water soluble?
The increased boiling point of ketones compared to alkanes and ethers of similar mass is due to
Which of the following compounds could have the molecular formula C7H16?
Organic compounds that are poorly soluble in water behave that way because they are
A peptide bond contains which kind of functional group?
Which neurotransmitter does not use reuptake as the primary mode for terminating neurotransmitter action?
A precursor of prostaglandins is __________ acid.
Which neurotransmitter is correctly associated with its action or function?
dopamine--initiation of movement
Hydrophobic interactions help to stabilize the __________ structure(s) of a protein.
tertiary and quaternary
Kate's blood volume is 3.9 LL . After three months of diet and exercise, if her blood glucose is 143 mg/dL , how many grams of glucose are in her blood?
m =5.6 g
Amino acids that are not synthesized in the body and must be obtained from the diet are called
Nerve poisons work by blocking _____
the breakdown of acetylcholine at the neuromuscular junction. Thus muscle contraction cannot be terminated.
Fructose does not undergo hydrolysis because it is a
The name of the reaction that occurs when a fat reacts with sodium hydroxide and water is __________.
Which statement is NOT describing glutamate neurotransmission?
This neurotransmitter is involved in muscle contraction
A glycosidic bond between two monosaccharides can also be classified as a(n)
Where do neurotransmitters always function?
at the synapse
Which statement about neurotransmitter synthesis is not correct?
L-DOPA is synthesized from tryptophan
Waxes are lipids derived from
a long-chain alcohol and a long-chain fatty acid.
What pharmacologically active amine is responsible for the signs and symptoms encountered in an allergic reaction?
Treatment for schizophrenia usually includes dopamine receptor blocking drugs. Patients often have motor side-effects similar to Parkinson's disease symptoms after taking antipsychotics for several years. Which statement does not explain (or line up logically with) these observations.
Blocking dopamine receptors will result in lower levels of epinephrine required for the flight or fight response (which requires muscle activity)
the storage form of carbohydrates in animals.
contain(s) only β(1→4)-glycosidic bonds.
contain(s) both α(1→4)- and α(1→6)-glycosidic bonds.
amylopectin and gtycogen
produce(s) maltose during digestion.
amylose and amylopectin
Which statement about brain chemistry is true?
Excitotoxicity caused by glutamate is thought to cause spinal neurons to degenerate in Lou Gehrig's disease.
Margarine containing partially hydrogenated soybean oil is solid because
some of its double bonds have been converted to single bonds.
conversion of glucose to pyruvate
citric acid cycle
the series of reactions that converts acetyl CoA to carbon dioxide and water
the series of reactions that produces water and uses electron carriers
DNA fingerprinting uses __________ to produce DNA fragments that can be separated and screened for the presence of genetic diseases.
Coenzymes such as water-soluble vitamins are needed in only small amounts because
each vitamin molecule can be reused many times as a cofactor.
If the DNA double helix in humans contains 28% guanine, what is the percent cytosine?
Which bond type is NOT correctly matched with its biochemical?
Which of the following statements is TRUE?
Thymine and Adenine are a complementary base pair that forms 2 hydrogen bonds.
A 2000 nucleotide sequence of an mRNA has been cloned to produce a peptide. The sequence contains 2 stop codons at the end and a signal peptide that is eliminated by processing in the endoplasmic reticulum before the protein is functional. The code for the signal peptide is found from nucleotide 1 to nucleotide 104. How many amino acids are in the functional peptide?
Recombinant DNA technology requires the use of bacterial
What is the process in which the DNA double helix unfolds, and each strand serves as a template for the synthesis of a new strand?
In anaerobic glycolysis, pyruvate is metabolized by a less efficient pathway than entry into the Kreb cycle. Choose the correct sentence (which fills in the blanks) to explain the production of additional ATP anaerobically.
Pyruvate is reduced to lactate when NADH is converted to NAD+. This NAD+ is used to oxidize glyceraldehyde-3-phosphate which produces 2 more ATP by the production of pyruvate.
Which of the following metabolic pathways can occur in the absence of oxygen?
Overall, one turn of the citric acid cycle produces
three NADH molecules.
The citric acid cycle operates only under aerobic conditions because
the NADH and FADH2 produced by the citric acid cycle can only be reoxidized by the electron transport chain.
Under aerobic conditions, pyruvate produced in glycolysis can be converted to
A virus that contains RNA as its genetic material and converts it to DNA is called a
Some sections of a DNA molecule do not code for protein synthesis. These segments are called
In an enzyme-substrate reaction, when excess substrate is present, increasing the concentration of the enzyme will
increase the amount of reaction occurring.
How is glycolysis regulated?
Hi ADP levels in the cytosol will activate phosphofructokinase
The NET production of energy molecules generated by the catabolism of three glucose molecule during glycolysis would be_____
6 ATP and 6 NADH.
The synthesis of glycogen can be classified as a(n)
In the study of genetics, the abbreviation PCR refers to
polymerase chain reaction.
When mRNA is synthesized using the information from DNA, the process is called
Coenzyme A is a molecule whose function is to
produce acyl groups for reaction.
Glycogen is normally stored in
liver and muscle
A polypeptide contains 26 amino acids. How many nucleotides would be found in the mRNA for this polypeptide?
The hydrolysis of ATP to ADP is
Which sugar does not feed into glycolysis?
The anticodon is
complementary to the codon on mRNA.
Allosteric enzymes can control their output of product by
binding a positive or negative regulator at a noncompetitive site.
Which is not true of DNA mutations.
DNA mutations can be inherited if they are caused by oncogenic viruses
A __________ consists of a nitrogen-containing base and a sugar.
The citric acid cycle takes place in the
To what main class of enzymes does the enzyme that catalyzes the following reaction belong?Ser-Ala → Ser + Ala
A noncompetitive inhibitor has a structure that
does not resemble the substrate structure
In the oxidation of two pyruvate, 2 pyruvate produce 2 acetyl CoA and a total of __________ ATP molecules.
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