1.
The cell theory states that all organisms are made of cells; cells are the most basic unit of life; and
A) all existing cells form by free-cell formation.
B) all cells are eukaryotic.
C) all existing cells are produced by other living cells.
D) all cells have a nucleus.
2.
What is the term for the jellylike substance that is contained inside the cell membrane?
A) Cytoplasm
B) DNA
C) Organelle
D) Nucleus
3.
Unlike a eukaryotic cell, a prokaryotic cell does not have
A) DNA.
B) a cell membrane.
C) cytoplasm.
D) a nucleus.
4.
Which of the following is a network of proteins that supports and gives shape to a cell?
A) Vesicles
B) Vacuole
C) Cytoskeleton
D) Cytoplasm
5.
Which of the following organelles can be found in the cytoplasm and on the surface of the endoplasmic reticulum?
A) Mitochondria
B) Centrosomes
C) Ribosomes
D) Centrioles
6.
Which organelle contains enzymes that break down damaged cell parts?
A) Centriole
B) Lysosomes
C) Vacuole
D) Mitochondria
7.
What are the main differences between plant and animal cells?
A) Animal cells are eukaryotes and plant cells are not.
B) Plant cells are eukaryotes and animal cells are not.
C) Animal cells have cell walls and chloroplasts; plant cells do not.
D) Plant cells have cell walls and chloroplasts; animal cells do not.
8.
Cell membranes are constructed mainly of
A) phospholipid bilayers.
B) protein pumps.
C) carbohydrate gates.
D) free-moving proteins.
9.
Why do phospholipids form a double layer?
A) To only allow foreign molecules to cross the cell membrane
B) To allow for no materials to cross the cell membrane
C) To not allow the cells to maintain homeostasis
D) To allow for selective permeability
10.
Which phrase best describes the property of selective permeability?
A) Some molecules pass
B) All ions pass
C) Large molecules pass
D) All molecules pass
11.
A ligand produces a response in a cell if it finds the right kind of
A) carbohydrate.
B) hormone.
C) membrane.
D) receptor.
12.
A protein that detects a signal molecule and performs an action to a response across the cell membrane is called a
A) carbohydrate.
B) hormone.
C) membrane.
D) receptor.
13.
Which phrase best describes passive transport?
A) Requires transport proteins
B) Requires no energy from the cell
C) Requires an isotonic solution
D) Requires facilitation by enzymes
14.
Water moves into a cell when the solution surrounding the cell is
A) hypertonic.
B) hypotonic.
C) isotonic.
D) concentrated.
15.
What is the term for the diffusion of water across a semipermeable membrane?
A) Osmosis
B) Equilibrium
C) Transport
D) Isotonic
16.
The movement of molecules down a concentration gradient through transport proteins in the cell membrane is a type of
A) selective transport.
B) osmosis.
C) energy expenditure.
D) facilitated diffusion.
17.
The difference in the concentration of dissolved particles from one location to another is called a
A) concentration gradient.
B) concentrated solution.
C) saline solution.
D) dynamic gradient.
18.
Unlike passive transport, active transport requires
A) concentration gradients.
B) diffusion.
C) energy from the cell.
D) vesicles.
19.
Which process uses proteins to move molecules against a concentration gradient?
A) Active transport
B) Passive transport
C) Endocytosis
D) Phagocytosis
20.
Cells use active transport proteins to
A) obtain molecules they need.
B) break down molecules.
C) engulf large particles.
D) detect the charge of molecules.
21.
A membrane-bound sac used to transport substances into and out of cells is a
A) pump.
B) macrophage.
C) lysosome.
D) vesicle.
22.
Which invention played the biggest role in the discovery of cells by early scientists?
A) Magnifying glass
B) Lens
C) Eyeglasses
D) Compound microscope
23.
Specialized structures that work together inside a cell are called
A) organelles.
B) prokaryotes.
C) eukaryotes.
D) nuclei.
24.
What is the main function of the Golgi apparatus?
A) Communicate with other cells
B) Convert solar energy to chemical energy
C) Process and deliver proteins
D) Copy genetic material
25.
Which word best describes the structure of the cell membrane?
A) Layered
B) Rigid
C) Impermeable
D) Nonpolar
The cell theory states that all organisms are made of cells; cells are the most basic unit of life; and
A) all existing cells form by free-cell formation.
B) all cells are eukaryotic.
C) all existing cells are produced by other living cells.
D) all cells have a nucleus.
2.
What is the term for the jellylike substance that is contained inside the cell membrane?
A) Cytoplasm
B) DNA
C) Organelle
D) Nucleus
3.
Unlike a eukaryotic cell, a prokaryotic cell does not have
A) DNA.
B) a cell membrane.
C) cytoplasm.
D) a nucleus.
4.
Which of the following is a network of proteins that supports and gives shape to a cell?
A) Vesicles
B) Vacuole
C) Cytoskeleton
D) Cytoplasm
5.
Which of the following organelles can be found in the cytoplasm and on the surface of the endoplasmic reticulum?
A) Mitochondria
B) Centrosomes
C) Ribosomes
D) Centrioles
6.
Which organelle contains enzymes that break down damaged cell parts?
A) Centriole
B) Lysosomes
C) Vacuole
D) Mitochondria
7.
What are the main differences between plant and animal cells?
A) Animal cells are eukaryotes and plant cells are not.
B) Plant cells are eukaryotes and animal cells are not.
C) Animal cells have cell walls and chloroplasts; plant cells do not.
D) Plant cells have cell walls and chloroplasts; animal cells do not.
8.
Cell membranes are constructed mainly of
A) phospholipid bilayers.
B) protein pumps.
C) carbohydrate gates.
D) free-moving proteins.
9.
Why do phospholipids form a double layer?
A) To only allow foreign molecules to cross the cell membrane
B) To allow for no materials to cross the cell membrane
C) To not allow the cells to maintain homeostasis
D) To allow for selective permeability
10.
Which phrase best describes the property of selective permeability?
A) Some molecules pass
B) All ions pass
C) Large molecules pass
D) All molecules pass
11.
A ligand produces a response in a cell if it finds the right kind of
A) carbohydrate.
B) hormone.
C) membrane.
D) receptor.
12.
A protein that detects a signal molecule and performs an action to a response across the cell membrane is called a
A) carbohydrate.
B) hormone.
C) membrane.
D) receptor.
13.
Which phrase best describes passive transport?
A) Requires transport proteins
B) Requires no energy from the cell
C) Requires an isotonic solution
D) Requires facilitation by enzymes
14.
Water moves into a cell when the solution surrounding the cell is
A) hypertonic.
B) hypotonic.
C) isotonic.
D) concentrated.
15.
What is the term for the diffusion of water across a semipermeable membrane?
A) Osmosis
B) Equilibrium
C) Transport
D) Isotonic
16.
The movement of molecules down a concentration gradient through transport proteins in the cell membrane is a type of
A) selective transport.
B) osmosis.
C) energy expenditure.
D) facilitated diffusion.
17.
The difference in the concentration of dissolved particles from one location to another is called a
A) concentration gradient.
B) concentrated solution.
C) saline solution.
D) dynamic gradient.
18.
Unlike passive transport, active transport requires
A) concentration gradients.
B) diffusion.
C) energy from the cell.
D) vesicles.
19.
Which process uses proteins to move molecules against a concentration gradient?
A) Active transport
B) Passive transport
C) Endocytosis
D) Phagocytosis
20.
Cells use active transport proteins to
A) obtain molecules they need.
B) break down molecules.
C) engulf large particles.
D) detect the charge of molecules.
21.
A membrane-bound sac used to transport substances into and out of cells is a
A) pump.
B) macrophage.
C) lysosome.
D) vesicle.
22.
Which invention played the biggest role in the discovery of cells by early scientists?
A) Magnifying glass
B) Lens
C) Eyeglasses
D) Compound microscope
23.
Specialized structures that work together inside a cell are called
A) organelles.
B) prokaryotes.
C) eukaryotes.
D) nuclei.
24.
What is the main function of the Golgi apparatus?
A) Communicate with other cells
B) Convert solar energy to chemical energy
C) Process and deliver proteins
D) Copy genetic material
25.
Which word best describes the structure of the cell membrane?
A) Layered
B) Rigid
C) Impermeable
D) Nonpolar