Biology-Test Question and Answer/ Verified
What is an example of a hydrogen bond? - ✔✔The attraction between a hydrogen of one water molecule
and the oxygen of another water molecule
Which factor is most important in the movement of water up a tall tree? - ✔✔Leaf Transperation
A substrate molecule may be bound to the active site of an enzyme by all of the following - ✔✔hydrogen
bonds
peptide bonds
van der waals interactions
hydrophobic interactions
What is responsible for the cohesive property of water? - ✔✔Hydrogen bonds between the oxygen atom
of one water molecule and a hydrogen atom of another water molecule
What are the membrane structures that function in active transport? - ✔✔integral proteins
The movement of a substrate across a biological membrane against it's concentration gradient with the
help of energy input is - ✔✔active transport
carrier molecules in the membrane and metabolic energy are required for - ✔✔active transport
which characterizes the sodium-potassium pump? - ✔✔Sodium ions are pumped out of a cell against
their gradient
potassium ions are pumped into a cell against their gradient
the pump protein undergoes a conformational change
Takes materials out of the cell - ✔✔exocytosis
an organism with a cell wall would have the most difficulty doing which process? - ✔✔phagocytosis
, the presence of cholesterol in the plasma membranes of some animals - ✔✔enables the membrane to
stay fluid more easily when cell temperature drops
According to the fluid mosaic model of the cell membranes, which is a true statement about membrane
phospholipids? - ✔✔they can move laterally along the plane of the membrane
what is one of the ways that the membranes of winter wheat are able to remain fluid when it is
extremely cold? - ✔✔by increasing the percentage of unsaturated phospholipids in the membrane
all are functions of integral membrane proteins - ✔✔cytoskeleton attachment
hormone reception
active transport
cell adhesion
Which is most important for the glycoproteins and glycolipids of animal cell membranes? - ✔✔a cell's
ability to distinguish one type of neighboring cell from another
what would likely move through the lipid bilayer of a plasma membrane most rapidly? - ✔✔CO2
the selective permeability of biological membranes is dependent on... - ✔✔the type of transport
proteins that are present in the membrane
the lipid bilayer being permeable to primarily small, nonpolar molecules
What is true for metabolic pathways? - ✔✔they are highly regulated sequences of chemical reactions
they consume energy to build up polymers from monomers
The active site of an enzyme is the region that - ✔✔is involved in the catalytic reaction of an enzyme
what is not true of enzymes? - ✔✔enzymes provide activation energy for the reaction they catalyze
What is an example of a hydrogen bond? - ✔✔The attraction between a hydrogen of one water molecule
and the oxygen of another water molecule
Which factor is most important in the movement of water up a tall tree? - ✔✔Leaf Transperation
A substrate molecule may be bound to the active site of an enzyme by all of the following - ✔✔hydrogen
bonds
peptide bonds
van der waals interactions
hydrophobic interactions
What is responsible for the cohesive property of water? - ✔✔Hydrogen bonds between the oxygen atom
of one water molecule and a hydrogen atom of another water molecule
What are the membrane structures that function in active transport? - ✔✔integral proteins
The movement of a substrate across a biological membrane against it's concentration gradient with the
help of energy input is - ✔✔active transport
carrier molecules in the membrane and metabolic energy are required for - ✔✔active transport
which characterizes the sodium-potassium pump? - ✔✔Sodium ions are pumped out of a cell against
their gradient
potassium ions are pumped into a cell against their gradient
the pump protein undergoes a conformational change
Takes materials out of the cell - ✔✔exocytosis
an organism with a cell wall would have the most difficulty doing which process? - ✔✔phagocytosis
, the presence of cholesterol in the plasma membranes of some animals - ✔✔enables the membrane to
stay fluid more easily when cell temperature drops
According to the fluid mosaic model of the cell membranes, which is a true statement about membrane
phospholipids? - ✔✔they can move laterally along the plane of the membrane
what is one of the ways that the membranes of winter wheat are able to remain fluid when it is
extremely cold? - ✔✔by increasing the percentage of unsaturated phospholipids in the membrane
all are functions of integral membrane proteins - ✔✔cytoskeleton attachment
hormone reception
active transport
cell adhesion
Which is most important for the glycoproteins and glycolipids of animal cell membranes? - ✔✔a cell's
ability to distinguish one type of neighboring cell from another
what would likely move through the lipid bilayer of a plasma membrane most rapidly? - ✔✔CO2
the selective permeability of biological membranes is dependent on... - ✔✔the type of transport
proteins that are present in the membrane
the lipid bilayer being permeable to primarily small, nonpolar molecules
What is true for metabolic pathways? - ✔✔they are highly regulated sequences of chemical reactions
they consume energy to build up polymers from monomers
The active site of an enzyme is the region that - ✔✔is involved in the catalytic reaction of an enzyme
what is not true of enzymes? - ✔✔enzymes provide activation energy for the reaction they catalyze
