Patti's Biology

183 Questions  I  By Alt_key on May 2, 2012

  

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1.  What most distinguishes lipids from other biomolecules is ___________.
A.
B.
C.
D.
2.  The lock-and-key analogy for enzymes applies to the ___________.
A.
B.
C.
D.
3.  For the duration of meiosis I, each chromosome is _______.
A.
B.
C.
D.
4.  Which statement best summarizes the essence of chemical evolution?
A.
B.
C.
D.
5.  Which of the following does NOT occur as a direct result of a photon hitting a chlorophyll molecule?
A.
B.
C.
D.
E.
6.  Which of these represents a heterozygous genotype?
A.
B.
C.
D.
7.  Where is most of the water in cellular respiration produced?
A.
B.
C.
D.
8.  Which one of the following would you fail to find in a prokaryote?
A.
B.
C.
D.
9.  What is the difference between NAD+ and NADP?
A.
B.
C.
D.
10.  Word descriptions of a trait such as "brown", "wavy-haired", "round", "wrinkled", or "green" represent:
A.
B.
C.
D.
11.  Metaphase is characterized by _________.
A.
B.
C.
D.
12.  Crossover, the exchange of segments of homologous chromasomes, takes place during which of the following processes?
A.
B.
C.
D.
13.  Which of the following does not occur in post-transcriptional modifications occurring in eukaryotic mRNAs?
A.
B.
C.
D.
14.  How are RNA hairpin turns related to termination?
A.
B.
C.
D.
15.  Peroxisomes:
A.
B.
C.
D.
E.
16.  David Pribnow studied the base sequences of promoters in bacteria and bacterial viruses.  He found two conserved regions in these promoters (the -10 box and the -35 box).  What is the function of these two regions of the promoter?
A.
B.
C.
17.  If RNA polymerase is missing __________ then transcription would not begin.
A.
B.
C.
D.
E.
18.  During elongation, RNA polymerase has three predominant channels, or grooves.  These channels provide sites for all of the following EXCEPT ________.
A.
B.
C.
D.
19.  What is the function of the AGU on the loop of the tRNA?
A.
B.
C.
D.
20.  When the atoms involved in a covalent bond have the same electronegativity, what type of bond results?
A.
B.
C.
D.
21.  The allele which is traditionally indicated by an uppercase letter is the:
A.
B.
22.  The energy of electron transport serves to move protons to the outer mitochondrial compartment.  How does this help the mitochondrion to produce energy?
A.
B.
C.
D.
23.  Anti-codons are part of _________.
A.
B.
C.
D.
24.  Both parents have a heterozygous genotype for a particular trait. What are the chances that an offspring will display the recessive phenotype for that trait?
A.
B.
C.
D.
E.
25.  Nucleic acids have a definite polarity, or directionality.  Stated another way, one end of the molecule is different from the other end.  How are these ends described?
A.
B.
C.
D.
26.  Put the following steps of DNA replication in chronological order: 1. single stranded binding proteins (SSBPs) attach to DNA strands 2. hydrogen bonds between base pairs of antiparallel strands are broken 3. Primase binds to the site of origin 4. DNA polymerase binds to the template strand 5. an RNA primer is created
A.
B.
C.
D.
27.  Which of the following statements concerning chloroplasts is false?
A.
B.
C.
D.
28.  Ribosomes can attach to prokaryotic messenger RNA ____________.
A.
B.
C.
D.
29.  You are bored at a lunch meeting and surreptitiously place a raisin in your glass of water.  The raisin swells to twice its original size.  Relative to the water, the raisin must have been:
A.
B.
C.
D.
E.
30.  During DNA synthesis which of the following structures breaks hydrogen bonds between complementary bases?
A.
B.
C.
D.
E.
31.  How do phospholipids interact with water molecules?
A.
B.
C.
D.
32.  Nerve cells lose their ability to undergo mitosis.  Instead, they are permanently stuck in _______.
A.
B.
C.
D.
33.  The functional group (-OH) is called a __________.
A.
B.
C.
D.
E.
34.  Which of the following does NOT occur during the Calvin cycle?
A.
B.
C.
D.
E.
35.  Carotenoids:
A.
B.
C.
D.
E.
36.  The light reactions of photosynthesis supply the Calvin cycle with:
A.
B.
C.
D.
37.  If you were going to develop a new antibiotic against bacteria, you would probably need to become an expert on which of these carbohydrates?
A.
B.
C.
D.
E.
38.  In glycolysis, one molecule of glucose containing six carbons is converted to two molecules of _____ containing three carbons each.  This reaction also yields two molecules of _______ and two molecules of ________.
A.
B.
C.
D.
E.
39.  Carbon is an important element for biology because ___________.
A.
B.
C.
D.
40.  Two ATP molecules are expended in the energy investment phase of glycolysis.  Why is this energy needed to begin the process of glucose catabolism?
A.
B.
C.
D.
41.  A man and woman are both of normal pigmentation and have one child out of three who is albino (without pigmentation).  Albinism is an autosomal recessive trait.  What are the genotypes of the albino's parents?
A.
B.
C.
D.
E.
42.  During the Krebs cycle:
A.
B.
C.
D.
43.  A glycosidic linkage is analogous to which of the following in proteins?
A.
B.
C.
D.
44.  After chromasome separation in cell division, cytoplasm is divided between the two daughter cells in a process known as _______.
A.
B.
C.
D.
45.  During elongation, which site in the ribosome represents the location where a codon is being read?
A.
B.
C.
D.
46.  Which of the following molecules must move across the nuclear membrane after being synthesized from a DNA sequence and is then translated by a ribosome (in eukaryotes)?
A.
B.
C.
D.
47.  Why do chemical reactions tend to speed up when the concentration of the reactants is increased?
A.
B.
C.
D.
48.  Put the following events of transcription in chronological order: 1. Sigma binds to the promoter region 2. the double helix of DNA is unwound, breaking hydrogen bonds between complementary strands 3. sigma binds to RNA polymerase 4. sigma is released 5. transcription begins
A.
B.
C.
D.
49.  Color blindness is an X-linked recessive genetic disorder. A father is color blind.  The mother has a homozygous genotype for normal vision.  Choose the correct result regarding children of these parents.
A.
B.
C.
D.
E.
50.  Photosystems:
A.
B.
C.
D.
E.
51.  When one trait is governed by two ore more pairs of alleles instead of controlled by only one pair of alleles, this is called:
A.
B.
C.
D.
E.
52.  In the process of transcription _________.
A.
B.
C.
D.
53.  All of the proteins have directionality.  This means that
A.
B.
C.
D.
54.  The first gap in the cell cycle (G1) corresponds to __________.
A.
B.
C.
D.
55.  To absorb large particles, cells engulf them within their plasma membrane in a process called:
A.
B.
C.
D.
E.
56.  Given the DNA template TTTTT, which of the following bases would you find in a complementary RNA strand and where would it be synthesized?
A.
B.
C.
D.
57.  A father has type AB blood.  Which of the following statements is NOT true?
A.
B.
C.
D.
58.  Under what circumstances does membrane transport always require energy?
A.
B.
C.
D.
59.  Given that a cell's structure reflects its function, what would you predict that the function ofa cell with a large Golgi apparatus would be?
A.
B.
C.
D.
E.
60.  During DNA synthesis which of the following structures is responsible for extending an Okazaki fragment?
A.
B.
C.
D.
61.  The most effective portion(s) of the visible spectrum in driving photosynthesis is/are:
A.
B.
C.
D.
E.
62.  Traits controlled by alleles on the sex chromasome (X or Y) are said to be:
A.
B.
C.
D.
63.  If a human inherits two X chromasomes (one from each parent), the person will be:
A.
B.
C.
64.  In which organelle are lipids synthesized and modified within the eukaryotic cell?
A.
B.
C.
D.
E.
65.  Which of the following is a difference between RNA and DNA?
A.
B.
C.
D.
66.  How are phospholipid molecules that make up the surface membrane of a cell organized?
A.
B.
C.
D.
E.
67.  Free earlobes are dominant over attached earlobes.  If two people with attached earlobes have a child, what are the probabilities for the phenotype of their offspring for this trait?
A.
B.
C.
D.
68.  When a heterozygote has an intermediate phenotype between that of either homozygote, it is called:
A.
B.
C.
D.
69.  Most of the CO2 from the oxidation of glucose is released during __________.
A.
B.
C.
D.
70.  A peptide bond __________.
A.
B.
C.
D.
71.  When are atoms most stable?
A.
B.
C.
D.
72.  A primary transcript in the nucleus of a eukaryotic cell is __________ the functional mRNA, while a primary transcript in a prokaryotic cell is ________ the functional mRNA.
A.
B.
C.
D.
73.  Why is it that RNA can catalyze reactions but DNA cannot?
A.
B.
C.
D.
74.  The mitotic spindle is a microtubular structure that is involved in ________.
A.
B.
C.
D.
75.  The failure of homologous chromasomes or double stranded chromasomes to separate during meiosis is called:
A.
B.
C.
D.
76.  The term 'allele' most accurately refers to:
A.
B.
C.
D.
77.  Which of the following cellular components contains hydrolytic enzymes associated with the digestion of macromolecules?
A.
B.
C.
D.
78.  The microtubule-organizing center found in animal cells is an identifiable structure present during all phases of the cell cycle.  Specifically, it is known as which of the following?
A.
B.
C.
D.
79.  Homologous chromasomes ________.
A.
B.
C.
D.
80.  Chromasomes and their homologues align at the equator of the cell during ________.
A.
B.
C.
D.
81.  Where are cell membrane components synthesized?
A.
B.
C.
D.
E.
82.  Which of the following is part of a DNA molecule?
A.
B.
C.
D.
83.  How do eukaryotic codons and prokaryotic codons compare?
A.
B.
C.
D.
84.  Different steps in cellular respiration occur in different locations in the mitochondria.  Which of the following properly matches a step of respiration to its proper location?
A.
B.
C.
D.
E.
85.  As electrons are passed through the system of electron carriers associated with photosystem II, they lose energy.  What happens to this energy near the end of photosystem II?
A.
B.
C.
D.
86.  Which one of the following organelles is NOT found in both plant and animal cells?
A.
B.
C.
D.
87.  The promoter region for transcription in eukaryotic cells is referred to as the:
A.
B.
C.
D.
88.  Early investigators thought the oxygen produced by photosynthetic plants came from carbon dioxide.  In fact, it comes from ________.
A.
B.
C.
D.
89.  Which site in the ribosome holds a tRNA attached to the amino acid forming a peptide bond with the amino acid in the previous site?
A.
B.
C.
D.
90.  DNA is synthesized through a process known as semiconservative replication.  What is the template?
A.
B.
C.
D.
91.  Which of the following is an incorrect matching of organelle/cell part with its function?
A.
B.
C.
D.
E.
92.  The major role of carbohydrates in animals is
A.
B.
C.
D.
E.
93.  At what stage of meiosis does DNA replication take place?
A.
B.
C.
D.
94.  What scientist first conduced the experiments that led to the discovery of the mechanisms of inheritance?
A.
B.
C.
D.
E.
95.  Once a cell completes mitosis, molecular division triggers must be turned off.  What happens to MPF during mitosis?
A.
B.
C.
D.
96.  The device used in genetics to calculate the genotype and phenotype probabilities for offspring of two particular genotype parents is called
A.
B.
C.
D.
97.  In transcription, the zipper mechanism of the RNA polymerase serves the function of:
A.
B.
C.
D.
98.  The passive transport of water across a membrane from a solution of lower solute concetrate to a solution of higher solute concetration is best described as:
A.
B.
C.
D.
E.