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WorksheetsTour of the Cell
Total questions: 20
Worksheet time: 11mins
All of the following are part of a prokaryotic cell EXCEPT ____
a cell wall
a plasma membrane
ribosomes
an endoplasmic reticulum
Which of the following is a major difference between prokaryotic cells and eukaryotic cells?
Prokaryotes have cells while eukaryotes do not.
Eukaryotic cells have more intracellular organelles than prokaryotes
Prokaryotes are generally larger than eukaryotes.
Only eukaryotes have genetic material
Which structure is common to plan and animal cells?
chloroplast
central vacuole
mitochondrion
centriole
What is the function of the nuclear pore complex found in eukaryotes?
It regulates the movement of proteins and RNA's into and out of the nucleus
It synthesizes the proteins required to copy DNA and make RNA
It selectively transports molecules of the nucleus, but prevents al inbound molecules from entering the nucleus
It assembles ribosomes from raw materials that are synthesized in the nucleus
Large numbers of ribosomes are present in cells that specialize in producing which of the following molecules?
lipids
glycogen
proteins
nucleic acids
The nuclear lamina is an array of microfilaments on the inner side of the nuclear membrane. If a method were found that could cause the lamina to fall into disarray, what would you most likely expect to be the immediate consequence.
the loss of all nuclear function
the inability of the nucleus to divide during cell division
a change in the shape of the nucleus
failure of chromosomes to carry genetic information
A cell with a predominance of free ribosomes (as opposed to attached ribosomes) is most likely_______
primarily producing proteins for secretion out of the cell
primarily producing proteins in the cytosol
constructing an extensive cell wall or extracellular matrix
enlarging its vacuole
Which structure is NOT part of the endomembrane system?
nuclear envelope
chloroplast
Golgi apparatus (body)
plasma membrane
A cell with an extensive area of smooth endoplasmic reticulum is specialized to ________
play a role in storage
synthesize large quantities of lipids
actively export protein molecules
import and export protein molecules
Which structure is the site of the synthesis of proteins that may be exported from the cell?
rough ER
plasmodesmata
Golgi vesicles
free cytoplasmic ribosomes
Tay-Sachs disease is a human genetic abnormality that results in cells accumulating and becoming clogged with very large, complex, undigested lipids. Which cellular organelle mus be involved in this condition?
mitochriondion
lysosome
Golgi apparatus
endoplasmic reticulum
Which organelle is the primary site of ATP synthesis in eukaryotic cells?
lysosome
mitochondrion
Golgi apparatus
peroxisome
The plasma membrane is embedded with many different types of molecules that aid in the function of the membrane to provide protection and selective permeability for the cell. For a protein to be an integral membrane protein, it would have to be______________.
hydrophilic
hydrophobic
amphipathic, with a least one hydrophobic region
exposed on only one surface of the membrane
An animal cell lacking in oligosaccharides on the external surface of its plasma membrane would likely be impaired in which function?
cell to cell recognition
transporting ions against an eletrochemical gradient
attaching the plasma membrane to the cytoskeleton
establishing a diffusion barrier to the charged molecules
Match the labeled component of the cell membrane in the image with its description
Which component is a peripheral protein?
A
B
C
D
Match the labeled component of the cell membrane in the image with its description.
Which component is cholesterol?
A
C
D
E
Match the labeled component of the cell membrane in the image with its description.
Which component is a microfilament (actin protein filament) of the cytoskeleton?
A
C
D
E
Match the labeled component of the cell membrane in the image with its description.
Which component is a glycolipid?
A
B
C
D
Which of the following is a reasonable explanation for why unsaturated fatty acids help keep a membrane more fluid at lower temperatures?
The double bonds form kinks in the fatty acid tails, preventing adjacent lipids from packing tightly
Unsaturated fatty acids have a higher cholesterol content and, therefore, more cholesterol in membranes.
Unsaturated fatty acids are more polar than saturated fatty acids
The double bonds block interaction among the hydrophilic head groups of the lipids
What kinds of molecules pass through a cell membrane most easily?
large and hydrophobic
small and hydrophobic
large polar
ionic
