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Question
Identify the following amine base found in nucleic acids.
A) Adenine (A)
B) Cytosine (C)
C) Thymine (T)
D) Uracil (U)
Answer
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Related questions
Q:
What is the name for the alkyl group: A) isobutyl
B) tert-butyl
C) tributyl
D) trimethyl
Q:
The amide bonds that form when two or more amino acids link together are called ________ bonds.
Q:
The molecule H2NCH2CH2CH2OH contains an ________ functional group and an ________ functional group.
Q:
Identify the functional group: A) alcohol
B) amine
C) amide
D) ester
Q:
Which of the following statements is false regarding functional groups?
A) The chemical properties of the functional group dictate the chemistry of the larger molecule.
B) Each functional group has a characteristic chemical behavior.
C) A functional group consists of an atom or a group of atoms that is part of a larger molecule.
D) A functional group consists of only carbon and hydrogen atoms.
Q:
The alkane, 3-ethyl-3-methylhexane contains ________ carbon atoms and ________ hydrogen atoms.
Q:
Which of the following condensed structures represent the same molecule? A) I and II
B) II and IV
C) III and IV
D) II and III
Q:
Which condensed structure below representing an alkane is not correct?
A) CH3CH2CH3
B) C) CH3CH2CH2CH3
D)
Q:
Do the condensed structures shown below represent the same or different molecules?
Q:
The C-Br bond in CH3CH2Li is a ________ (nonpolar, polar) covalent bond with a ________ () charge on the carbon atom and a ________ () charge on the lithium atom.
Q:
Orbitals used by carbon for bonding in C2H6, C2H4, and C2H2 are ________, ________, and ________, respectively.
Q:
The H-C-H bond angles in C2H6, C2H4, and C2H2 are ________, ________, and ________, respectively.
Q:
Which one of the following amino acids does not contain a basic side chain?
A) arginine
B) histidine
C) lysine
D) threonine
Q:
Which one of the following molecules is the most polar?
A) butane
B) butanoic acid
C) cyclohexane
D) ethanol
Q:
Which compound is a saturated hydrocarbon?
A) 1-butyne
B) cycloheptene
C) 3- methylheptane
D) 2-heptyne
Q:
When octane, C8H18, reacts with oxygen to produce carbon dioxide and water, 5070 kJ of heat are released per mole of methane. How many kJ of heat are released per gram of oxygen used?
A) 6.34 kJ/g
B) 12.7 kJ/g
C) 1980 kJ/g
D) 3960 kJ/g
Q:
How many isomers are there for C5H12?
A) 3
B) 4
C) 5
D) 6
Q:
Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic.
B) basic.
C) neutral, non-polar.
D) neutral, polar.
Q:
Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic.
B) basic.
C) neutral, non-polar.
D) neutral, polar.
Q:
Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic.
B) basic.
C) neutral, non-polar.
D) neutral, polar.
Q:
Identify the amino acid shown below. A) Arganine (Arg)
B) Histidine (His)
C) Lysine (Lys)
D) Valine (Val)
Q:
Identify the amino acid shown below. A) Asparagine (Asn)
B) Aspartic acid (Asp)
C) Glutamic acid (Glu)
D) Glutamine (Gln)
Q:
Identify the amino acid shown below. A) Cysteine (Cys)
B) Serine (Ser)
C) Threonine (Thr)
D) Tyrosine (Tyr)
Q:
Identify the amino acid shown below. A) Cysteine (Cys)
B) Serine (Ser)
C) Threonine (Thr)
D) Tyrosine (Tyr)
Q:
Identify the amino acid shown below. A) Cysteine (Cys)
B) Serine (Ser)
C) Threonine (Thr)
D) Tyrosine (Tyr)
Q:
The process of forming mRNA from DNA is called
A) metamorphosis.
B) replication.
C) transcription.
D) translation.
Q:
The nucleotide sequence, T-A-G, stands for
A) threonine-alanine-glutamine
B) thymine-adenine-guanine
C) tyrosine-asparagine-glutamic acid
D) None of these
Q:
What is the sugar component in RNA called?
A) fructose
B) galactose
C) glucose
D) ribose
Q:
The attractive force between the cylic amine bases in DNA is
A) disulfide bridges.
B) hydrogen bonding.
C) hydrophobic stacking.
D) ionic interactions of salt bridges.
Q:
The one cyclic amine base that occurs in DNA but not in RNA is ________.
A) cystine
B) guanine
C) thymine
D) uracil