WorksheetsBio Exam 3 Review
Total questions: 52
Worksheet time: 45mins
Which type of metabolic reaction builds complex molecules from simpler ones?
Catabolic
Anabolic
Metabolic
Synthetic
What is the term for the energy required to start a chemical reaction?
kinetic energy
thermal energy
activation energy
potential energy
Which process involves the uptake of materials into a cell by engulfing them with the cell membrane?
exocytosis
phagocytosis
osmosis
endocytosis
Which process involves the release of materials from a cell by fusing vesicles with the cell membrane?
pinocytosis
phagocytosis
exocytosis
endocytosis
In a spontaneous reaction, the change in Gibbs free energy is ________.
negative
undefined
zero
positive
Which type of metabolic reaction breaks down complex molecules into simpler ones?
anabolic reaction
synthetic reaction
metabolic reaction
catabolic reaction
What is the term for the energy available to do work in a system?
kinetic energy
chemical energy
potential energy
thermal energy
Which process involves the movement of materials into a cell by vesicle formation?
endocytosis
exocytosis
diffusion
osmosis
What is the term for the energy stored in the bonds of chemical substances?
kinetic energy
chemical energy
potential energy
thermal energy
What type of reaction combines simple molecules to build complex ones?
anabolic reaction
synthetic reaction
metabolic reaction
catabolic reaction
Which process involves the movement of water molecules from a region of higher concentration to a region of lower concentration?
osmosis
endocytosis
exocytosis
diffusion
Organisms get their energy to do work from ___________ energy.
solar energy
chemical energy
thermal energy
nuclear energy
The reaction shown is:
endergonic because energy is released
exergonic because energy is released
endergonic because energy is captured
exergonic because energy is captured
Which statement is true according to the image?
A: endergonic; B: exergonic
A: exothermic; B: endothermic
A: exergonic; B: endergonic
A: endothermic; B: exothermic
Which type of molecule forms the basic structure of the cell membrane?
Phospholipids
Carbohydrates
Proteins
Nucleic acids
What is the main function of cholesterol in the cell membrane?
Regulate fluidity and stability
Provide energy for cellular processes.
Act as a structural component of the cell membrane.
Facilitate cell communication.
What is the main function of cholesterol in the cell membrane?
Regulate fluidity and stability
Provide energy for cellular processes.
Act as a structural component of the cell membrane.
Facilitate cell communication.
What are glycoproteins and what is their function in the cell membrane?
Glycoproteins are proteins without carbohydrates attached to them and their function in the cell membrane includes cell-cell recognition, cell signaling, and immune response.
Glycoproteins are proteins with carbohydrates attached to them and their function in the cell membrane includes cell-cell recognition, cell signaling, and immune response.
Glycoproteins are proteins with lipids attached to them and their function in the cell membrane includes cell-cell recognition, cell signaling, and immune response.
Glycoproteins are carbohydrates with proteins attached to them and their function in the cell membrane includes cell-cell recognition, cell signaling, and immune response.
Which subtopic of the cell membrane is involved in cell signaling?
lipid bilayer
receptor proteins
cytoskeleton
nucleus
What is the role of cell adhesion molecules in the cell membrane?
Cell adhesion molecules facilitate cell-to-cell adhesion and communication.
Cell adhesion molecules are responsible for cell division.
Cell adhesion molecules regulate the cell's metabolic activities.
Cell adhesion molecules help in the transport of nutrients across the cell membrane.
What happens to the fluidity of the cell membrane at low temperatures?
The fluidity of the cell membrane decreases.
The fluidity of the cell membrane increases.
The fluidity of the cell membrane remains the same.
The fluidity of the cell membrane fluctuates.
How does cholesterol affect the permeability of the cell membrane?
Cholesterol increases the rigidity of the cell membrane and reduces its permeability.
Cholesterol only affects the permeability of certain types of cells.
Cholesterol has no effect on the permeability of the cell membrane.
Cholesterol decreases the rigidity of the cell membrane and increases its permeability.
What is the function of carbohydrates in the cell membrane?
Provide energy for cellular processes
Act as a structural component of the cell membrane
Facilitate cell communication
Regulate fluidity and stability
What is the role of proteins in the cell membrane?
Proteins play no role in the cell membrane.
Proteins in the cell membrane act as channels and transporters, helping substances move across the cell membrane.
Proteins in the cell membrane provide structural support but do not assist in substance transport.
Proteins in the cell membrane only assist in the transport of water molecules.
Which of the following statements about diffusion is true?
It is very rapid of long distances.
It requires an expenditure of energy by the cell.
It is an active process in which molecules move from a region of lower concentration to a region of higher concentration.
It is a passive process in which molecules move from a region of higher concentration to a region of lower concentration.
Which cell is in a hypertonic environment?
A
B
C
None of them are hypertonic
Assuming that the purple molecules are too large to pass through the membrane, what would happen to the water level as a result of osmosis?
The water level would rise on the A side
The water level would rise on the B side
The water level would remain constant
The water level would drop on the A side.
The difference between diffusion and facilitated diffusion is
diffusion occurs directly across the membrane while facilitated diffusion occurs through a protein pore or channel.
diffusion occurs through a protein pore or channel while facilitated diffusion occurs directly across the membrane .
Any molecule traveling against the concentration gradient will move by
diffusion
facilitated diffusion
osmosis
active transport
Identify cholesterol molecule
structure a
structure b
structure h
structure i
Identify a peripheral protein
structure a
strucure b
structure g
structure h
Small, nonpolar, hydrophobic molecules such as fatty acids
easily pass through the membrane's bilayer
very slowly diffuse through the bilayer
require transport proteins
enter through endocytosis
Which of the following allows water to move faster across cell membranes?
aquaporins
ATP
peripheral proteins
the sodium-potassium pump
What is the "big idea" of the Fluid Mosaic Model of plasma membranes?
the plasma membrane creates a specialized FLUID that looks like a MOSAIC.
the plasma membrane is a MOSAIC.
the fluid mosaic model is NOT related to the plasma membrane.
a plasma membrane is a MOSAIC of components that move FREELY and FLUIDLY.
