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48 questions
Which part of the cell is made up of a network of filaments that maintains the cell structure?
Cytoplasm
Endoplasmic reticulum
Cytoskeleton
Vacuoles
Which filaments are built from molecules of protein actin?
Microtubules
Microfilaments
Intermediate filaments
Cilia and flagella
Channels that perforate plant cell wall
Plasmodesmata
Tight junctions
Desmosomes
Gap junctions
Which of the following is the main function of intermediate filaments?
Cytoplasmic streaming
Cellular motility
Separate chromosomes in dividing cells
Fix organelles in place
Intermediate filaments are found in what structure?
The mitotic spindle
Desmosomes
Cilia
Centrosome
Breakdown of molecules one of life processes in eukaryotic cells, which involves
Lysosomes
Peroxisomes
Vacuoles
All of the above
Structural support, movement and communication of the cell involve:
Cytoskeleton
Plasma membrane
Cell wall
All of the above
Microfilaments play major role in:
Formation of nuclear lamina
Cleavage furrow
Chromosomes movements
All of the above
….. is not contains microfilaments protein.
Microvilli
centrioles
Plant cell
Muscle cell
Motion of flagella is not:
Covers freshwater protozoan Colpidium
Driving cell in the same direction
Snake like
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One of the following is composed of actin subunit:
Microtubules
Intermediate filaments
Microfilaments
All of the above
Which of the following is microfilaments function?
Chromosomes movements
Cleavage furrow formation
Formation of nuclear lamina
None of the above
Which of the following is microtubule function?
Chromosomes movements
Cleavage furrow formation
Formation of nuclear lamina
None of the above
Which of the following is mismatch with flagellum characteristic?
Drive the cell in the same direction
Contains dynein protein
Can slide far
Snake like movements
Which of the following is correct regarding cilia characteristic?
Drive the cell in the same direction
Contains dynein protein
Can slide far
Snake like movements
Which of the following is not ECM components?
Carbohydrates
Protein
Cholesterol
Macromolecules
Peroxisomes function is involved in:
Manufacturing process
Breakdown of molecules process
Energy processing
Structural support, movement and communication
Nucleus function is involved in:
Manufacturing process
Breakdown of molecules process
Energy processing
Structural support, movement and communication
Which of the following intercellular junction contains keratin?
Tight junction
Gap junction
Desmosomes
All of the above
Which cellular junction is not found in animal cell?
Tight junction
Desmosomes
Gap Junction
Plasmodesmata
Which of the following is found in the nucleus of animal cells?
Microtubules
Actin filaments
Microfilaments
Intermediate filaments
Which of the following are found only in animal cells?
Intermediate filaments
Microtubules
Nucleus
Microfilaments
Cilia and flagella are …..
Intermediate filaments
Microfilaments
Microtubules
Phospholipids
Microtubules are formed of the protein ……..
Dynein
Keratin
Tubulin
Actin
Cytoskeletal filaments are polymers of ………
Ribonucleic acid
Protein
Deoxyribonucleic acids
Carbohydrates
Cytoskeleton filaments share in:
Change in cell shape
Maintenance of cell shape
Cell division
Cell motility
What is mismatch with cytoskeleton`s a network?
organizes structures and activities in the cell
communicates between cells in many types of tissues
gives mechanical support to the cell
composed of protein polymers
What of the following is mismatch with microfilaments functions?
muscle contractions
cytoplasmic streaming
chromosome movements
cell motility
What of the following is mismatch with Ciliary motion?
Direction perpendicular to the axis
Back and forth motion
Covers Colipidium protozoan
Bend begins at the top of the cilium
What of the following is mismatch with tight junctions?
forming continuous seals around the cells.
prevent leakage of extracellular fluid.
small molecules and ions pass through.
connect epithelial cells.
All of the following are plant cell wall components except:
Cellulose
Lipid
Protein
Polysaccharides
Specific proteins forming continuous seals around the cells are involved in:
Tight junction
Gape Junction
Desmosomes
All of the above
Junctions are necessary for comunications between cells in many types of tissues including animal embryos and heart muscles.
Tight junctions
Desmosomes
Gap junctions
All of the above
Responsible with protein myosin in muscle cell contraction
Actin filamints
Tubulin polymers
Intermediate filamints
None of the above
Anchorage of nucleus and certain other organelles
Microtubules
Microfilaments
Actin Filaments
Intermediate filaments
Which of the following contain the 9+2 arrangement of microtubules?
cilia
centrioles
flagella
Cilia and flagella
Actin and myosin filaments are most abundant in …… cells
connective
Muscle
Epithelial
nerve
The bending movements of cilia and flagella:
Involves dynein action of microfilaments
are associated with microtubules
are produced when dynein motors pull adjacent microtubules doublets past each other.
involve the alternate assembly and disassembly of actin filaments.
Which of the following is NOT a function of the cytoskeleton?
Transporting of molecules within the cell
Transporting of molecules into the cell
Cell movement
Anchoring the cell
The extracellular matrix is thought to participate in the regulation of the animal cell behaviour by communicating information from the outside to inside of the cell via which of the following?
DNA and RNA
Nucleus
Integrin
Gap junction
Identify the true statement(s).
Dynein always moves toward the plasma membrane.
Dynein is responsible for movement of microvilli.
Myosin motors move along actin proteins.
Myosin motors move along actin proteins and Dynein always moves toward the plasma membrane.
Which characteristic regarding microfilaments is incorrect?
They serve as mechanical stiffeners for microvilli.
They are composed of actin subunits.
They are involved in cell locomotion.
They form mitotic spindles.
Choose the incorrect statement about the cytoskeleton.
It may help organize groups of enzymes.
It is involved cilia movements.
It is involved in replication of DNA
It has components within microvilli
Microfilaments are well known for their role in which of the following:
Amoeboid movements.
Formation of cleavage furrows.
Contracting of muscle cells.
All of the above
Endoplasmic reticulum is classified as …. process.
Breakdown of molecule
Energy processing
Manufacture
Structural support, movement and communication
Communication junction is
desmosomes
plasmodesmata
gap junction
tight junction
Plasmodesmata in plant cell are most similar in function to which of the following structures in animal cells:
Gap junction
Tight junction
Extracellular matrix
Desmosomes
Gap junction is found in ….
Epithelial cells
Animal embryos
Heart muscle
B+C
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