WorksheetsCell Organelle, Membrane, ane Cell Signaling
Total questions: 30
Worksheet time: 29mins
Name
Class
Date
1.
Prokaryotes are classified as belonging to two different domains. What are they?
a)
Bacteria & Protista
b)
Bacteria & Archaea
c)
Bacteria & Eukarya
d)
Archaea & Protista
2.
Plant cells have ___ for cell to cell communication.
a)
gap junctions
b)
plasmodesmata
c)
desmosomes
d)
tight junctions
3.
Which structure is common to plant and animal cells?
a)
central vacuole
b)
chloroplast
c)
wall made of cellulose
d)
mitochondrion
4.
Which of the following would likely move through the lipid bilayer of a plasma membrane most rapidly?
a)
CO2
b)
an amino acid
c)
starch
d)
glucose
5.
Binding of a signaling molecule to which type of receptor leads directly to a change in the distribution of ions on opposite sides of the membrane?
a)
phosphorylated tyrosine kinase dimer
b)
ligand-gated ion channel
c)
receptor tyrosine kinase
d)
G protein-coupled receptor
6.
The difference between pinocytosis and receptor-mediated endocytosis is that
a)
pinocytosis requires cellular energy, but receptor-mediated endocytosis does not.
b)
pinocytosis brings only water molecules into the cell, but receptor-mediated endocytosis brings in other molecules as well.
c)
pinocytosis is nonselective in the molecules it brings into the cell, whereas receptor-mediated emdocytosis offers more selectivity.
d)
pinocytosis increases the surface area of the plasma membrane whereas receptor-mediated endocytosis decreases the plasma membrane surface area.
7.
All of the following are part of a prokaryotic cell except
a)
a plasma membrane
b)
DNA
c)
an endoplasmic reticulum
d)
ribosomes
8.
Which is not a part of a signal transduction pathway?
a)
response
b)
transcription
c)
transduction
d)
receptor
9.
Of the following, a receptor protein in a membrane that recognizes a chemical signal or ligand is most similar to
a)
a metabolic pathway operating within a specific organelle.
b)
an enzyme having an optimum pH and temperature for activity.
c)
tRNA specifying which amino acids are in a polypeptide.
d)
the active site of an enzyme that binds to a specific substrate.
10.
If a pharmaceutical company wished to design a drug to maintain low blood sugar levels, one approach might be to design a compound
a)
that increases cAMP production in kidney cells.
b)
that increases phosphorylation of ADP activity.
c)
that activates epinephrine receptors for a flight-or-fight response.
d)
to block G protein activity to slow the production of glucose from glycogen in liver cells.
11.
Which describes the events of apoptosis?
a)
The cell's DNA & organelles become fragemented, the cell shrinks & forms blebs, the cell's parts are packaged in vesicles that are digested by cells like macrophages.
b)
The cell dies, it is lysed, its organelles are phagocytized, and its contents are recycled.
c)
The cell's DNA and organelles become fragmented, the cell dies, and it's phagocytized.
d)
The cell shrinks, dies, and the presence of its fragmented contents stimulate nearby cells to divide.
12.
A biologist ground up some plant leaf cells and then centrifuged the mixture to fractionate the organelles. Organelles in one of the heavier fractions could produce ATP in the light, whereas organelles in the lighter fraction could produce ATP in the dark. The heavier and lighter fractions are most likely to contain, respectively,
a)
mitochondria and chloroplasts.
b)
peroxisomes and chloroplasts.
c)
chloroplasts and peroxisomes.
d)
chloroplasts and mitochondria.
13.
Apoptosis involves all but which of the following?
a)
activation of cellular enzymes
b)
fragmentation of the DNA
c)
cell-signaling pathways
d)
replication of the cell
14.
What type of transport is this?
a)
Endocytosis
b)
Diffusion
c)
Exocytosis
d)
Osmosis
15.
What type of organelle is used during endocytosis and exocytosis?
a)
Endoplasmic Reticulum
b)
Golgi Body
c)
Vesicle
d)
Lysosome
16.
Passive transport is called "passive" because it occurs WITHOUT
a)
cause.
b)
energy.
c)
a concentration gradient.
d)
a cell wall.
17.
Which of the following does NOT describe an aquaporin?
a)
a transport protein
b)
amphipathic
c)
water travels through it
d)
it requires energy (ATP) to function
18.
Which of the following substances can not cross the cell membrane on its own without the assistance of a transport protein?
a)
carbon dioxide
b)
carbon monoxide
c)
oxygen
d)
glucose
19.
What does amphipathic mean?
a)
a molecule with only polar regions
b)
a molecule with only nonpolar regions
c)
a molecule with both polar and nonpolar regions
d)
a molecule that can change its polarity based on its environment
20.
Which organelle detoxifies substances by producing hydrogen peroxide?
a)
peroxisome
b)
chloroplast
c)
smooth ER
d)
lysosome
21.
Which of the following organelles is responsible for storing substances in plants and some protists?
a)
vacuoles
b)
vesicles
c)
ribosomes
d)
microtubules
22.
Which organelles store starch (amylose)?
a)
amyloplasts
b)
chromoplasts
c)
mitochondria
d)
chloroplasts
23.
Which organelle is found in animal and protist cells and uses hydrolytic enzymes to digest substances?
a)
lysosome
b)
peroxisome
c)
smooth ER
d)
central vacuole
24.
Which organelles modifies proteins and packages them into vesicles to be shipped out of the cell?
a)
free ribosomes
b)
rough ER
c)
smooth ER
d)
golgi apparatus
25.
Which organelles folds proteins and packages them into vesicles to be shipped to other organelles to be processed?
a)
free ribosomes
b)
rough ER
c)
smooth ER
d)
golgi apparatus
26.
Which organelles produce/synthesize proteins that remain in the cell?
a)
free ribosomes
b)
rough ER
c)
smooth ER
d)
bound ribosomes
27.
Which organelles produce/synthesize proteins?
a)
ribosomes
b)
rough ER
c)
smooth ER
d)
nucleolus
28.
Which type of cell contains a wall made of chitin?
a)
fungal
b)
bacteria
c)
plant
d)
animal
29.
Which cell type could contain vesicles?
a)
animal and protist cells
b)
plant cells only
c)
animal and plant cells
d)
bacteria cells only
30.
Which four structures are found in all cells?
a)
DNA, ribosomes, cytosol, and a cell membrane
b)
nucleus, ribosomes, cytosol, and a cell membrane
c)
nucleus, ribosomes, cytosol, and mitochondria
d)
DNA, cell wall, cytosol, and a cell membrane
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