AP Bio Final
which letter shows the potential energy of the product
D
identify the proteins involved in transport
D. big blob
which of the following is not normally found in a plant cell
centrioles
which of the following harvests the most energy during cell respiration
chemiosmosis
which of the following is not related to cell-to-cell communication
countercurrent exchange
which level of protein structure is most directly related to specificity
tertiary
which of the following is an example of a hydrogen bond
the attraction between the oxygen of one water molecule and the hydrogen of an adjacent molecule
which of the following statements about cell respiration is NOT correct
the citric acid cycle produces pyruvate
in 1957, after rigorous testing, a pharmaceutical company in West germany introduced a new drug to the market
the drug contained molecules that were isomers and mirror images of each other. one version worked as expected, while the other caused birth defects
you perform an enzyme-controlled reaction
the enzyme was most active at pH 4.6
each NADH molecule carrying hydrogen to the electron transport chain can produce a maximum of ____ molecules of ATP
3
read the following description of a branched reaction pathway
A-C
identify the structure involved in cell-to-cell communication
A. strand of dots coming off of blob
identify the site of the ATP synthase in the sketch of a mitochondrion shown below
A: the edge of the squiggle blobs
identify the hydrophillic portion of a lipid molecule
B balls
which figure depicts an animal cell placed into a solution hypotonic to the cell
B. big chunk with bite taken out of it, water arrow pointing towards chunk
you tag amino acids with radioactive phosphorus because amino acids are incorporated
ER-Golgi apparatus-vesicles that fuse with plasma membrane
which of the following is NOT correct about NADH and/or FADH2
FADH2 results in the production of more ATP than does NADH
Which of the following statements about a particular molecule is correct and gives your reason for your answer?
H20 is a polar molecule because part of the molecule is positively charged while the remaining part is negatively charged.
Here is a sketch of two amino acids-the building blocks of...which atoms are removed
HOH
glycolysis is the first phase of aerobic cellular respiration it is a complex enzyme-controlled set of reactions in which glucose molecules are broken down...
PFK inhibits the production of ATP when ATP levels are high
which of the following initiates a signal transduction pathway that leads to a response in a cell
a transmembrane receptor changes its conformation
Which of the following is stored in the human liver for energy
glycogen
which of the following probably evolved first
glycolysis
which of the following is correct about signal transduction pathways
in the signal transduction pathway a single molecule can stimulate the release of thousands of molecules of product within a cell
the pH of blood
is normally close to 7.4
which of the following correctly describes the role of cyclic AMP
it acts as a second messenger for signaling molecules that cannot pass through the cell membrane
which of the following is correct about G protein
it is an on-off molecular switch that gets activated by the membrane-bound receptor.
when glucose is broken down in a cell only about 38% of the energy released is captured by the cell for later use. what happens to the rest of the energy
it is lost as heat
bisphenol A is a chemical agent found in many plastics
it mimics the hormone estrogen and causes problems in fetal development even when estrogen is not present in excess
all of the following processes produce ATP except
lactic acid fermentation
here is an equation for a simple enzyme-controlled experiment. what would be the best way to increase the amount of AB produced
lower the activation energy of the reaction
membranes are components of all of the following except a
microtubuole
which organelle contains DNA
mitochondria
you are performing enzyme-controlled reaction A+B+ enzyme... explanation for what substance X is
noncompetitive inhibitor of the enzyme
which of the following most accurately describes the advantage of a signal transduction pathway
one binding molecule can trigger the release of thousands of molecules
clothes washing detergent must be able to remove grease and oil stains from clothing while also dissolving and washing away in the rinse water. Which of the following is the correct structure of the detergent molecules and the correct reason for it?
one end of a detergent molecule is nonpolar in order to dissolve oily stains, while the other end is polar to dissolve in the rinse water.
which model correctly depicts a neutral atom of hydrogen
one proton in middle, one electron in cloud
Which of the following is correct about the role of oxygen during cell respiration
oxygen pulls electrons through the electron transport chain and ultimately bonds with them
after strenuous exercise a muscle cell would contain decreased amounts of ___________ and increased amounts of ______
oxygen; lactic acid
which is an example of a feedback mechanism
phosphofructokinase an allosteric enzyme in glycolysis is inhibited by ATP
the cytoplasmic channels between plant cells are called
plasmodesmata
which of the following is correct about the processes shown
process B produces ATP by substrate level phosphorylation
smooth ER carries out all of the following activites except
produces RNA
proteins are formed in a ribosome as amino acids...what is the best explanation
proper folding of a polypeptide is critical for a protein to function properly
chaperonins are involved with
proper folding of proteins
during cell respiration most ATP is formed as a direct result of the net movement of
protons flowing through a channel
in addition to ATP what is produced during glycolysis
pyruvate and NADH
which of the following is present in a prokaryote cell
ribosomes
signal transduction pathways are complex, involving many different molecules and many steps...
signal transduction pathways offer more opportunity to amplify the signal
which one of the following would not normally diffuse through the lipid bilayer
starch; because it is too large
which of the following choices best describes the reaction below
the potential energy of the reactants is greater than the potential energy of the products
which of the following can be used to determine the rate of an enzyme-catalyzed reaction
the rate of substrate used up
which of the following statements is correct about the reaction shown here
the reaction is an exergonic oxidation reaction
which of the following is not correct about apoptosis
the signals that trigger the process always come from outside the cell that is to die
which of the following requires ATP
the uptake of cholesterol by a cell
which of the following if true about water potential
the water potential inside a cell is positive
isotopes are atoms of a given element that have the same number of protons but vary in the number of neutrons the element carbon has three isotopes
they are chemically identical because they have the same number of electrons
which of the following is correct about protein kinase receptors
they belong to a class of plasma membrane receptors that exhibit enzyme activity
which of the following is correct about receptors that are located in the cytoplasm
they blind to a signal molecule in the cytoplasm which causes a response in the nucleus
all of the following statements are correct about enzymes except
they raise the energy of activation of all reactions
which of the following is correct about chemical signals that bind to receptors located on the cell membrane rather than receptors in the cytoplasm
they require a second messenger
which of the following best characterizes the structure of the plasma membrane
very active
which is true of aerobic respiration but not true of anaerobic respiration
water is produced
one drop each of water and ethyl alcohol... appearance of these two liquids
water molecules exhibit grater cohesion tension than do those of ethyl alcohol
all of the following are characteristics of water except
water molecules have little attraction for each other
which of the following pairs of base sequences could form a short stretch of DNA
5'-TTAA-3'-AATT-5'
what is the approximate size of a human red blood cell
8 micrometers
which of the following is the most important thing that happens during aerobic respiration
ATP is produced
which letter shows the energy of activation for the enzyme-catalyzed reaction
C
you are carrying out an experiment with an enzyme from the human small intestine
add more substrate
which of the following best describes the reaction shown below
an exergonic reaction
the loss of hydrogen or electrons is known as
oxidation
