BIO EXAM2
an animal cell placed in a hypnotic solution is likely to: a.) enlarge and possibly lyse b.) plasmolyze c.) shrink in size d.) be unaffected e.) collapse causing a blank hole
A
an unfavorable reaction that occurs along with the cleavage of ATP and ADP and phosphate is an example of _______ a.) a coupled reaction b.) an amphipathic reaction c.) an endergonic reaction d.) an exergonic reaction e.) a redox reaction
A
in an experiment DNA extracted from the pathogenic S strain of Streptococcus pneumoniae is mixed with living cells of the non-pathogenic R strain and this mixture is injected into mice. what will happen? a.) the mice will die and the bacteria taken from the dead mice will look like the S strain b.) the mice will die and the bacteria taken from the dead mice will look like an R strain c.) the mice will live; any surviving bacteria will look like an S strain d.) the mice will live; any surviving bacteria will look like an R strain
A
DNA isolated from bacterium is composed of 30% thymidine (T). what percentage of nucleotides are guanosine (G)? a.) 10% b.) 20% c.) 30% d.) 40% e.) 50%
B
Recently some Kentucky students took some breath mints containing chlorophyll and decided to go to the beach and photosynthesize. This probably wont work because the proteins that bind chlorophyll are not present in humans, even students and coaches from the University of Kentucky. What proteins listed below bind chlorophyll? a.) rubisco b.) photosystem I and photosystem II c.) the chloroplast ATP synthase d.) answers a and b are correct e.) answers b and c are correct
B
in the hershey-chase experiment, which part of the virus was inserted into the host cell to start a viral infection? a.) viral capsule b.) viral nucleic acids c.) viral lipids d.) viral protein e.) viral DNA and the associated proteins
B
which organism produces O2? a.) all living things produce O2 b.) only photosynthetic organisms produce O2 c.) only organisms that undergo alcoholic fermentation produce O2 d.) living things do not make O2 e.) only prokaryotes produce O2
B
______ is probably the most abundant enzyme on the planet a.) hemoglobin b.) catalase c.) rubisco d.) cytochrome oxidase e.) photosystem II
C
a glass of salt water is ______ relative to a glass of pure water a.) isotonic b.) hypotonic c.) hypertonic d.) barimetric e.) exothermic
C
four zebra are crossing a lion-infested savanna. it has been a dry summer. a pride of lions is chasing the zebras. the psychological conditions of these zebras are given below. -zebra A has depleted glucose levels and his muscles are well oxygenated -zebra B has depleted glucose levels and his muscles are anaerobic -zebra C has normal glucose levels and his muscles are well oxygenated -zebra D has normal glucose levels and his muscles are anaerobic which zebra (s) will likely become a chew toy? a.) zebra A b.) zebra B c.) zebra A and B d.) zebra A and C e.) zebra B and D
C
four zebra are crossing a lion-infested savanna. it has been a dry summer. a pride of lions is chasing the zebras. the psychological conditions of these zebras are given below. -zebra A has depleted glucose levels and his muscles are well oxygenated -zebra B has depleted glucose levels and his muscles are anaerobic -zebra C has normal glucose levels and his muscles are well oxygenated -zebra D has normal glucose levels and his muscles are anaerobic which zebras would you say has the best chance of escaping the lions?
C
the bases adenine and thymidine base pair in DNA double helixes. what type of bond and how many make up this interaction. a.) 2 covalent bond b.) 3 covalent bonds c.) 2 hydrogen bonds d.) 3 hydrogen bonds e.) 2 ionic bonds
C
the concentration of NADH outside of the mitochondrion is lower than the concentration inside. a specific transport protein is required for NADH to enter the mitochondria, and ATP is required. this is an example of: a.) osmosis b.) contransport c.) active transport d.) fascillitated diffusion e.) simple diffusion
C
the flasks contain all of the nutrients yeast requires for growth except they differ in energy source. the five flasks: flask A contains no O2 and no glucose and is kept in the dark flask B contains no O2 and no glucose but has CO2 and is kept in the light flask C contains O2 and no glucose and is kept in the dark flask D contains no O2 but has glucose and is kept in the dark flask E contains O2 and has glucose and is kept in the dark which flask (s) is/are producing ethanol? a.) only A b.) only B c.) only D d.) A and B e.) A, B, and D
C
the making of an exact copy of DNA is called ______ a.) DNA excitation b.) DNA ligation c.) DNA replication d.) DNA crossover e.) DNA transformation
C
a chemical reaction that requires energy to take place is called ____ a.) a pyrotechnic reaction b.) an adiabatic reaction c.) an exergonic reaction d.) an endergonic reaction e.) an allergic reaction
D
four zebra are crossing a lion-infested savanna. it has been a dry summer. a pride of lions is chasing the zebras. the psychological conditions of these zebras are given below. -zebra A has depleted glucose levels and his muscles are well oxygenated -zebra B has depleted glucose levels and his muscles are anaerobic -zebra C has normal glucose levels and his muscles are well oxygenated -zebra D has normal glucose levels and his muscles are anaerobic which zebra is using glucose at the fastest rate
D
from one glucose molecule, glycolysis provides the cell with _____ a.) 1 GTP, 1 ATP, and 1 NADH b.) 1 GTP, 2 ATP, and 1 FADH2 c.) 2 GTP and 2 NADPH d.) 2 ATP and 2 NADH e.) 1 ATP, 3 NADH, and 1 FADH2
D
what type of photosynthesis is done by using sugar cane? a.) lactic acid fermentation b.) molasses shunt-type carbon fixation c.) C3-type photosynthesis d.) C4-type photosynthesis e.) CAM type photosynthesis
D
when compared and oxidized NAD+, reduced NADH has _____ a.) an extra phosphate group b.) one less phosphate group c.) one more carbon=carbon double bond d.) one less carbon=carbon double bond e.) one less oxygen atom
D
which is the direct source of energy that drives ATP synthesis by the mitochondrial ATP synthase? a.) oxidation reduction reactions b.) O2 reduction c.) the krebs cycle d.) AH+ gradient across the inner membrane e.) pyruvate
D
which of these steps directly requires O2? a.) glycolysis b.) oxidation of pyruvate to acetyl CoA c.) krebs cycle d.) electron transport e.) chemiosmotic ATP synthesis
D
which one of these steps oxidizes NADH? a.) glycolysis b.) oxidation of pyruvate to acetyl CoA c.) krebs cycle d.) electron transport e.) chemiosmotic ATP synthesis
D
which pathway is common or reaction is used in both aerobic respiration and alcohol fermentation a.) the electron transport chain b.) the calvin cycle c.) the krebs cycle d.) glycolysis e.) production of lactic acid
D
which statement about DNA is true? a.) DNA binds to ribosomes during protein synthesis b.) DNA contains the sugar ribose c.) DNA contains the base uracil d.) DNA contains the base adenine e.) all of the above statements are true
D
the flasks contain all of the nutrients yeast requires for growth except they differ in energy source. the five flasks: flask A contains no O2 and no glucose and is kept in the dark flask B contains no O2 and no glucose but has CO2 and is kept in the light flask C contains O2 and no glucose and is kept in the dark flask D contains no O2 but has glucose and is kept in the dark flask E contains O2 and has glucose and is kept in the dark which flask (s) is/are producing CO2? a.) only B b.) only E c.) B and E d.) C and E e.) D and E
E
the processes of active transport and the movement of motor proteins involved in cell motility both require a.) NAD+ b.) NADH c.) phospholipids d.) passive diffusion e.) ATP
E
you have a yeast strain that has a defect in cytochrome oxidase? under what conditions, if any, could that cell grow a.) it can grow by aerobic respiration b.) it can grow by alcohol fermentation c.) it can grow by photosynthesis d.) b and c are correct e.) it will not be able to grow under any circumstances
B
how many CO2 molecules are produced when one maltose molecule is completely converted to CO2 and H2O by aerobic respiration? remember maltose is a disaccharide made of two glucose molecules a.) 3 b.) 6 c.) 10 d.) 12 e.) 18
D
most plants make sucrose, a disaccharide of glucose and fructose, from CO2 fixed during photosynthesis. how many CO2 molecules are needed to make one sucrose molecule? a.) 3 b.) 4 c.) 6 d.) 10 e.) 12
E
the flasks contain all of the nutrients yeast requires for growth except they differ in energy source. the five flasks: flask A contains no O2 and no glucose and is kept in the dark flask B contains no O2 and no glucose but has CO2 and is kept in the light flask C contains O2 and no glucose and is kept in the dark flask D contains no O2 but has glucose and is kept in the dark flask E contains O2 and has glucose and is kept in the dark which flask (s) is/are growing? a.) only B b.) only E c.) B and E d.) C and E e.) D and E
E
the process of endocytosis ______ a.) the movement of substances into the cell through membrane-bound vesicles b.) the movement of substances out of the cell through membrane- bound vesicles c.) the active transport of molecules into the cell through membrane transport proteins d.) the active transport of molecules out of the cell through membrane transport proteins e.) the passive diffusion of substances across the cell membrane
A
which one of these steps breaks glucose down into two 3-carbon molecules? a.) glycolysis b.) oxidation of pyruvate to acetyl CoA c.) krebs cycle d.) electron transport e.) chemiosmotic ATP synthesis
A
which molecule below is the most oxidized?
C
which of the following can pass most easily through a lipid bilayer? a.) DNA b.) ATP c.) O2 d.) catalase e.) Na+
C
which one of these steps releases the most CO2? a.) glycolysis b.) oxidation of pyruvate to acetyl CoA c.) krebs cycle d.) electron transport e.) chemiosmotic ATP synthesis
C
the sequence of one strand of a double-stranded DNA molecule is given below what is the sequence of the other strand? the sequence: 5'-CGTACAA-3' a.) 5'-TTGTACG-3' b.) 5'-GCATGTT-3' c.) 5'-AACATGC-3' d.) 5'-ATAGGGC-3' e.) 5'-GCAUGUU-3'
A
used aerobic respiration, which molecule can provide the most energy? a.) pyruvate b.) acetylCoA c.) glucose d.) lactic acid e.) CO2
C
when hershey and chase labled the phage with 35S-sulfur, what cellular component were they specifically labeling? a.) the phage were not labeled in this experiment, phage do not contain a sulfur-containing molecule b.) nucleic acids were specifically labeled c.) proteins were specifically labeled d.) nucleic acids and proteins were both labeled e.) the cell capsule was specifically labeled
C
how are the plasma membrane and a membrane of the golgi apparatus different? a.) only the plasma membrane would have phospholipids b.) only the plasma membrane would have proteins c.) only the golgi apparatus has proteins d.) the proteins in each membrane would be different e.) the cellulose content in the membranes is different
D
in the next experiment DNA extracted from baboon skin cells is mixed with living cells of the non-pathogenic R strain of S. pneumoniae and this mixture is injected into mice. what will happen? a.) the mice will die and the bacteria taken from the dead mice will look like the S strain b.) the mice will die and the bacteria taken from the dead mice will look like the R strain c.) the mice will live; any surviving bacteria will look like S strain d.) the mice will live; any surviving bacteria will look like R strain
D
insulin, a hormone, is made in pancreatic cells and exported from the cell in small vesicles. these vesicles fuse with plasma membrane releasing the insulin from the cell. what process is occurring? a.) facilitated diffusion b.) active transport c.) endocytosis d.) exocytosis e.) phagocytosis
D
the concentration of pyruvate outside of the mitochondrion is lower than the concentration inside a specific transport protein is requirerd for pyruvate to cross the membrane, but no ATP is required. this is an example of: a.) osmosis b.) contransport c.) active transport d.) fascillitated diffusion e.) simple diffusion
D