BIO Exam 2 Sample

what type of photosynthesis is done by sugar cane?

C4-type photosynthesis

The making of an exact copy of DNA is called

DNA replication

which of the following can pass most easily through the lipid bilayer?

O2

How many CO2s molecules are produced when one maltose molecule is completely converted to CO2 and H2O by aerobic respiration? (maltose is made of 2 glucose molecules)

12

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?

12

from one glucose molecule, glucose provides the cell with _______

2 ATP 2 NADH

the bases adenine and thymidine base pair in DNA double helices. What type of bond and how many make up this interaction?

2 hydrogen bonds

DNA isolated from a bacterium is composed of 30% thymidine (T). What percentage of the nucleotides are guanosine (G)?

20%

The sequence of one strand of a double stranded DNA molecule is 5" CGTACAA 3". What is the other strand?

5" TTAGTACG 3"

the processes of active transport and the movement of motor proteins involved in cell motility both require ______

ATP

Metabolite "A" is converted to metabolite "D" with metabolites "B" and "C" as intermediates. As metabolite "D" builds up in the cell it inhibits enzyme 2. When this happens what will happen to the amounts of metabolites "B" and "C"?

B will increase and C will decrease

flask A contains no O2 and no glucose and is kept in the dark flask B has no O2 and no glucose but has CO2 and us in the light flask C has O2 but no glucose and is kept in the dark flask D has no O2 but has glucose and is in the dark flask E contains O2 and has glucose and is in the dark what flask are growing?

D & E

flask A contains no O2 and no glucose and is kept in the dark flask B has no O2 and no glucose but has CO2 and us in the light flask C has O2 but no glucose and is kept in the dark flask D has no O2 but has glucose and is in the dark flask E contains O2 and has glucose and is in the dark which are producing O2?

D & E

Which statement is true? a. DNA binds to ribosomes during protein synthesis b. DNA contains r=the sugar ribose c. DNA contains the base uracil d. DNA contains the base adenine e. all of the above

D. DNA contains the base adenine

what is the direct source of energy that drives ATP synthesis by the mitochondrial ATP synthase?

H+ gradient across the inner membrane

which molecule below is the most oxidized?

H-C---C-H (triple bond btw carbons)

which organism produces O2

Only photosynthetic organisms produce O2

An unfavorable reaction that occurs along with the cleavage of ATP to ADP and phosphate is an example of _____.

a coupled reaction

the concentration of NADH outside the mitochondrion is lower than the concentration inside. A specific transport protein is required for NADH to enter the mitochondrion but ATP is required. This is an example of

active transport

a. Zebra A has depleted glucose levels and his muscles are oxygenated b. zebra B had depleted glucose levels and his muscles are anaerobic c. zebra c has normal glucose and his muscles are well oxygenated d. zebra d has normal glucose levels and his muscles are anaerobic Which zebra would you say has the best chance escaping the lion?

c. normal glucose and muscles oxygenated

a. Zebra A has depleted glucose levels and his muscles are oxygenated b. zebra B had depleted glucose levels and his muscles are anaerobic c. zebra c has normal glucose and his muscles are well oxygenated d. zebra d has normal glucose levels and his muscles are anaerobic which zebra is using glucose at the fastest rate?

d. normal glucose and muscles = anaerobic

a. glycolysis b. oxidation of pyruvate to acetyl Coa c. krebs cycle d. electron transport e. chemiosmotic ATP synthesis which one oxidizes NADH?

electron transport

a. glycolysis b. oxidation of pyruvate to acetyl Coa c. krebs cycle d. electron transport e. chemiosmotic ATP synthesis which step directly requires O2?

electron transport

a chemical reaction that requires energy to take place is ______

endergonic

An animal cell placed in a hypotonic solution is likely to __________.

enlarge and possibly lyse

Insulin 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?

exocytosis

the concentration pyruvate outside of the mitochondrion is higher than the concentration inside. A specific transport protein is required for pyruvate to cross the membrane but no ATP is required. This is an example of

facilitated diffusion

Using aerobic respiration, which molecule can provide the most energy?

glucose

a. glycolysis b. oxidation of pyruvate to acetyl Coa c. krebs cycle d. electron transport e. chemiosmotic ATP synthesis which one breaks down glucose into two 3-carbon molecules

glycolysis

which pathway is common or reaction is used in both aerobic respiration and alcohol fermentation?

glycolysis

a glass of salt water is _______ relative to a glass of pure water

hypertonic

what is the correct location of the krebs cycle?

in the mitochondrial matrix

You have a yeast strain that has a defect in cytochrome oxidase. Under what conditions, if any, could that cell grow?

it can grow by alcohol fermentation

a. glycolysis b. oxidation of pyruvate to acetyl Coa c. krebs cycle d. electron transport e. chemiosmotic ATP synthesis which releases the most O2?

krebs cycle

what is the location of the photosynthetic electron transport chain?

long oval in middle

When compared with oxidized NAD+ reduced NADH has _______?

one less carbon = carbon double bond

flask A contains no O2 and no glucose and is kept in the dark flask B has no O2 and no glucose but has CO2 and us in the light flask C has O2 but no glucose and is kept in the dark flask D has no O2 but has glucose and is in the dark flask E contains O2 and has glucose and is in the dark which are producing ethanol?

only D

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?

photosystems I & II

when Hershey and Chase labeled the phage with 35 S - sulfur, what cellular component were they specifically labeling?

proteins

_________ is probably the most abundant enzyme on the planet

rubisco

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?

the mice will die and the bacteria taken from the dead mice will look like strain S

in the next experiment, DNA extracted from baboon skin cells is mixed with living cells of the non- pathogenic R strain of S and this mixture is injected into mice. What is gonna happen?

the mice will live, any surviving bacteria will look like strain R

the process of endocytosis is _________

the movement of substances into the cell through membrane bound vesicles

how are the plasma membrane and a membrane of the golgi body different?

the proteins in each membrane would be different

what part of the Calvin cycle is the location of light independent reactions?

thylakoid

In the Henry-Chase experiment which part of the virus was inserted into the host cell to start an infection?

virus nucleic acids

a. Zebra A has depleted glucose levels and his muscles are oxygenated b. zebra B had depleted glucose levels and his muscles are anaerobic c. zebra c has normal glucose and his muscles are well oxygenated d. zebra d has normal glucose levels and his muscles are anaerobic which zebra will be the lions chew toy?

zebra a and b