AP BIOLOGY QUARTER 1 TEST
QUESTIONS AND ANSWERS
The presence of cholesterol in the plasma membranes of some cells.... - Answer-enable
the membrane to stay fluid more easily when cell temperature drops.
White blood cells engulf bacteria through what process? - Answer-phagocytosis
From the perspective of the cell receiving the message, the three stages of cell
signaling are... - Answer-signal reception, signal transduction, and cellular response
What is one of the main energy transformers of cells? - Answer-mitochondrion
What is capable of converting light energy to chemical energy? - Answer-chloroplasts
What is the function of bound ribosomes? - Answer-They generally synthesize
membrane proteins and secretory proteins.
In order for a protein to be an integral membrane protein it would have to be what? -
Answer-amphipathic
One of the major categories of receptors in the plasma membrane reacts by forming
dimmers, adding phosphate groups, then activating relay proteins. Which type does
this? - Answer-receptor tyrosine kinases
The sodium-potassium pump is called an electrogenic pump because it... - Answer-
contributes to the membrane potential
Plasmodesmata in plant cells are most similar in function to what structure in animal
cells? - Answer-gap junctions
What is a characteristic feature of a carrier protein in a plasma membrane? - Answer-It
exhibits a specificity for a particular type of molecule.
The toxin of Vibrio cholerae causes profuse diarrhea because it... - Answer-modifies a
G protein involved in regulating salt and water secretion.
Which type of organelle is primarily involved in the synthesis of oils, phospholipids, and
steroids? - Answer-smooth endoplasmic reticulum
What is the voltage across a membrane called? - Answer-membrane potential
Name a structure common to both plant and animal cells. - Answer-mitochondrion
, A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a test
tube of water containing 0.02 molar glucose. Assuming glucose is not actively
transported into the cell, describe the tonicity of the external solution relative to the
cytoplasm of the cell. - Answer-isotonic
Name the organelle that is a compartment that often takes up much of the volume of a
plant cell? - Answer-vacuole
Water passes quickly through cell membranes because... - Answer-it moves through
aquaporins i the membrane.
What membrane activity requires energy fro ATP hydrolysis? - Answer-Na+ ions moving
out of the cell
What organelle contains enzymes that transfer hydrogen from various substrates to
oxygen? - Answer-peroxisome
What is the major cause of the size limits for certain types of cells? - Answer-The need
for a surface area of sufficient area to allow the cell's function.
In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the
production of what? - Answer-ATP, CO2, and ethanol (ethyl alcohol)
Starting with citrate, what combination of products would result from THREE turns of the
citric acid cycle? - Answer-3 ATP, 6 CO2, 9 NADH, and 3 FADH2
During a laboratory experiment, you discover that an enzyme-catalyzed reaction has a
Δ G of -20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the
Δ G for the new reaction? - Answer--20 kcal/mol
Which process in the eukaryotic cells will proceed normally whether oxygen is present
or absent? - Answer-glycolysis
In chemiosmotic phosphorylation, what is the most direct source of energy that is used
to convert ADP +P to ATP? - Answer-Energy released from movement of protons
through ATP synthase
What's the difference between autotrophs and heterotrophs? - Answer-Autotrophs, but
not heterotrophs, can nourish themselves beginning with CO2 and other nutrients that
inorganic.
What is the relationship between wavelength of light and the quantity of energy per
photon? - Answer-They are inversely related
Energy released by the electron transport chain is used to pump H+ ions into what
location? - Answer-mitochondrial intermembrane space
QUESTIONS AND ANSWERS
The presence of cholesterol in the plasma membranes of some cells.... - Answer-enable
the membrane to stay fluid more easily when cell temperature drops.
White blood cells engulf bacteria through what process? - Answer-phagocytosis
From the perspective of the cell receiving the message, the three stages of cell
signaling are... - Answer-signal reception, signal transduction, and cellular response
What is one of the main energy transformers of cells? - Answer-mitochondrion
What is capable of converting light energy to chemical energy? - Answer-chloroplasts
What is the function of bound ribosomes? - Answer-They generally synthesize
membrane proteins and secretory proteins.
In order for a protein to be an integral membrane protein it would have to be what? -
Answer-amphipathic
One of the major categories of receptors in the plasma membrane reacts by forming
dimmers, adding phosphate groups, then activating relay proteins. Which type does
this? - Answer-receptor tyrosine kinases
The sodium-potassium pump is called an electrogenic pump because it... - Answer-
contributes to the membrane potential
Plasmodesmata in plant cells are most similar in function to what structure in animal
cells? - Answer-gap junctions
What is a characteristic feature of a carrier protein in a plasma membrane? - Answer-It
exhibits a specificity for a particular type of molecule.
The toxin of Vibrio cholerae causes profuse diarrhea because it... - Answer-modifies a
G protein involved in regulating salt and water secretion.
Which type of organelle is primarily involved in the synthesis of oils, phospholipids, and
steroids? - Answer-smooth endoplasmic reticulum
What is the voltage across a membrane called? - Answer-membrane potential
Name a structure common to both plant and animal cells. - Answer-mitochondrion
, A cell whose cytoplasm has a concentration of 0.02 molar glucose is placed in a test
tube of water containing 0.02 molar glucose. Assuming glucose is not actively
transported into the cell, describe the tonicity of the external solution relative to the
cytoplasm of the cell. - Answer-isotonic
Name the organelle that is a compartment that often takes up much of the volume of a
plant cell? - Answer-vacuole
Water passes quickly through cell membranes because... - Answer-it moves through
aquaporins i the membrane.
What membrane activity requires energy fro ATP hydrolysis? - Answer-Na+ ions moving
out of the cell
What organelle contains enzymes that transfer hydrogen from various substrates to
oxygen? - Answer-peroxisome
What is the major cause of the size limits for certain types of cells? - Answer-The need
for a surface area of sufficient area to allow the cell's function.
In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the
production of what? - Answer-ATP, CO2, and ethanol (ethyl alcohol)
Starting with citrate, what combination of products would result from THREE turns of the
citric acid cycle? - Answer-3 ATP, 6 CO2, 9 NADH, and 3 FADH2
During a laboratory experiment, you discover that an enzyme-catalyzed reaction has a
Δ G of -20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the
Δ G for the new reaction? - Answer--20 kcal/mol
Which process in the eukaryotic cells will proceed normally whether oxygen is present
or absent? - Answer-glycolysis
In chemiosmotic phosphorylation, what is the most direct source of energy that is used
to convert ADP +P to ATP? - Answer-Energy released from movement of protons
through ATP synthase
What's the difference between autotrophs and heterotrophs? - Answer-Autotrophs, but
not heterotrophs, can nourish themselves beginning with CO2 and other nutrients that
inorganic.
What is the relationship between wavelength of light and the quantity of energy per
photon? - Answer-They are inversely related
Energy released by the electron transport chain is used to pump H+ ions into what
location? - Answer-mitochondrial intermembrane space
