Patti's Biology

183 Questions  I  By Alt_key

  
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1.  Which of the following does not occur in post-transcriptional modifications occurring in eukaryotic mRNAs?
A.
B.
C.
D.
2.  Which of the following statements represents a major difference between prokaryotic cells and eukaryotic cells?
A.
B.
C.
D.
3.  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.
4.  Somatic cells of roundworms have four chromasomes  How many chromasomes would you find in an ovum (egg) from a roundworm?
A.
B.
C.
D.
5.  What aspects of amino acid structure vary among different amino acids?
A.
B.
C.
D.
6.  Which of the following is NOT true of hydrogen bonds?
A.
B.
C.
D.
E.
7.  Nerve cells lose their ability to undergo mitosis.  Instead, they are permanently stuck in _______.
A.
B.
C.
D.
8.  Which of the following statements concerning chloroplasts is false?
A.
B.
C.
D.
9.  Which of these represents a heterozygous genotype?
A.
B.
C.
D.
10.  How do the alpha and beta forms of glucose differ?
A.
B.
C.
11.  When nucleotides polymerize to form a nucleic acid __________.
A.
B.
C.
D.
12.  When the pH of a solution goes from 7 to 11 we know that ___________.
A.
B.
C.
D.
E.
13.  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.
14.  At what stage of meiosis does DNA replication take place?
A.
B.
C.
D.
15.  A peptide bond __________.
A.
B.
C.
D.
16.  The promoter region for transcription in eukaryotic cells is referred to as the:
A.
B.
C.
D.
17.  The lock-and-key analogy for enzymes applies to the ___________.
A.
B.
C.
D.
18.  A beta-pleated sheet in a protein is an example of a:
A.
B.
C.
D.
19.  Which of the following is the outermost feature on the surface of the plant cell?
A.
B.
C.
D.
E.
20.  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.
21.  Which of the following does NOT occur as a direct result of a photon hitting a chlorophyll molecule?
A.
B.
C.
D.
E.
22.  Which of the following cellular components contains hydrolytic enzymes associated with the digestion of macromolecules?
A.
B.
C.
D.
23.  Which of the following is part of a DNA molecule?
A.
B.
C.
D.
24.  An atom has six electrons in its valence shell.  How many single covalent bonds would you expect it to form in most circumstances?
A.
B.
C.
D.
25.  Once a cell completes mitosis, molecular division triggers must be turned off.  What happens to MPF during mitosis?
A.
B.
C.
D.
26.  What is the function of the AGU on the loop of the tRNA?
A.
B.
C.
D.
27.  How are RNA hairpin turns related to termination?
A.
B.
C.
D.
28.  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.
29.  Homologous chromasomes are separated during ________.
A.
B.
C.
D.
30.  Crossover, the exchange of segments of homologous chromasomes, takes place during which of the following processes?
A.
B.
C.
D.
31.  During DNA synthesis which of the following structures breaks hydrogen bonds between complementary bases?
A.
B.
C.
D.
E.
32.  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.
33.  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.
34.  In photosynthesis, both the first and the second photosystems:
A.
B.
C.
D.
35.  Once researchers understood that chromasomes are moved by the spindle microtubules, the next question they wanted to answer is how the microtubules function to bring about this process.  They used fluorescent labels to make the chromasomes and the microtubular structures fluoresce.  When anaphase begain (centromeres split), they photobleached a section of microtubules.  As chromasomes moved toward the poles of the daughter cells, the photobleached sections of the microtubules remained stationary.  This result suggests that _______.
A.
B.
C.
D.
36.  In cells, the activity of enzymes is often regulated by other molecules.  Why is this necessary?
A.
B.
C.
D.
37.  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.
38.  If an atom has a charge of +1, which of the following must be true?
A.
B.
C.
D.
39.  Which of the following is a difference between RNA and DNA?
A.
B.
C.
D.
40.  Nucleic acids are polymers made up of which of the following monomers?
A.
B.
C.
D.
41.  In the polymerization of DNA, a phosphodiester bond is formed between a phosphate group of the nucleotide being added and _______ of the last nucleotide in the polymer.
A.
B.
C.
D.
42.  Which one of the following organelles is NOT found in both plant and animal cells?
A.
B.
C.
D.
43.  The most effective portion(s) of the visible spectrum in driving photosynthesis is/are:
A.
B.
C.
D.
E.
44.  If an X-linked trait, such as color blindness, is present in a family, the disease will occur more often in male offspring than in female offspring.
A.
B.
45.  Polymerization of monomers often occurs by removing a hydrogen from one monomer and hydroxyl from the other to remove a water molecule as the monomers join.  This type of reaction is called
A.
B.
C.
D.
46.  Which of the following is an important difference between the rough endoplasmic reticulum and the smooth endoplasmic reticulum?
A.
B.
C.
D.
47.  Which of the following is the best explanation for why vegetable oil is a liquid at room temperature while animal fats are solid?
A.
B.
C.
D.
48.  Which of the following is not one of the three components that make up a nucleotide?
A.
B.
C.
D.
49.  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.
50.  What would happen if MPF (mitosis-promoting factor) is introduced into immature frog oocytes that are arrested in G2?
A.
B.
C.
D.
51.  A cell's interior is considered isotonic to the surrounding fluid when:
A.
B.
C.
D.
E.
52.  The most abundant protein in the world is the enzyme that initiates the fixation of carbon in the Calvin cycle.  This enzyme is called:
A.
B.
C.
D.
53.  How do phospholipids interact with water molecules?
A.
B.
C.
D.
54.  During DNA synthesis, which structure is responsible for stabilizing DNA in its single-stranded form?
A.
B.
C.
D.
E.
55.  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.
56.  During elongation, which site in the ribosome represents the location where a codon is being read?
A.
B.
C.
D.
57.  To absorb large particles, cells engulf them within their plasma membrane in a process called:
A.
B.
C.
D.
E.
58.  Energy used in cellular respiration can originate from:
A.
B.
C.
D.
E.
59.  Which of the following is NOT one of the steps in initiation of translation?
A.
B.
C.
D.
60.  What does it mean when we say the genetic code is redundant?
A.
B.
C.
D.
61.  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.
62.  In translation, what signals termination of the process?
A.
B.
C.
D.
63.  The light reactions of photosynthesis supply the Calvin cycle with:
A.
B.
C.
D.
64.  Under what circumstances does membrane transport always require energy?
A.
B.
C.
D.
65.  What is the difference between an aldose sugar and a ketose sugar?
A.
B.
C.
D.
66.  Which of the following statements about the light reactions of photosynthesis are correct?
A.
B.
C.
D.
E.
67.  Which of the following processes contributes directly to genetic variation?
A.
B.
C.
D.
68.  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.
69.  Which of the following events takes place in the electron transport chain?
A.
B.
C.
D.
70.  The primary function of molecular membranes is the transport of ions and molecules in and out of cells--transport is directional and selective.  The moving of molecules from areas of high concetration to that of low concentration is best described as:
A.
B.
C.
D.
E.
71.  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.
72.  Which of the following does NOT occur during the Calvin cycle?
A.
B.
C.
D.
E.
73.  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.
74.  In which organelle are lipids synthesized and modified within the eukaryotic cell?
A.
B.
C.
D.
E.
75.  Which of the following is NOT synthesized from a DNA template?
A.
B.
C.
D.
76.  Which of the following is NOT a function of the plant vacuole?
A.
B.
C.
D.
E.
77.  Which one of the following would you fail to find in a prokaryote?
A.
B.
C.
D.
78.  Metaphase is characterized by _________.
A.
B.
C.
D.
79.  What is the function of the group of amino acids on the RNA polymerase, called the rudder?
A.
B.
C.
D.
80.  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.
81.  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.
82.  What is the main function of the nucleolus?
A.
B.
C.
D.
E.
83.  The major role of carbohydrates in animals is
A.
B.
C.
D.
E.
84.  The combination of a tRNA molecule and its properly connected and properly associated amino acid is referred to as the:
A.
B.
C.
D.
85.  For the duration of meiosis I, each chromosome is _______.
A.
B.
C.
D.
86.  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.
87.  DNA is synthesized through a process known as semiconservative replication.  What is the template?
A.
B.
C.
D.
88.  Proteins in biological systems ______.
A.
B.
C.
D.
89.  Carotenoids:
A.
B.
C.
D.
E.
90.  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.
91.  If the DNA code for a particular amino acid is AGT, then the anticodon on the tRNA would be ____________.
A.
B.
C.
D.
92.  If RNA polymerase is missing __________ then transcription would not begin.
A.
B.
C.
D.
E.
93.  Prokaryotic organisms lack:
A.
B.
C.
D.
E.
94.  Which of the following is an incorrect matching of organelle/cell part with its function?
A.
B.
C.
D.
E.
95.  Sugar and CO2 are dissolved in water to make carbonated soft drinks.  Which of the following is the solute?
A.
B.
C.
D.
E.
96.  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.