WorksheetsChapter 6.6 and 6.7 Review
Total questions: 18
Worksheet time: 15mins
Motor proteins provide for molecular motion in cells by interacting with what types of cellular structures?
sites of energy production in cellular respiration
membrane proteins
ribosomes
cytoskeletal structures
Movement of vesicles within the cell depends on what cellular structures?
microtubules and motor proteins
actin filaments and microtubules
actin filaments and ribosomes
centrioles and motor proteins
Which of the following contain the 9 + 2 arrangement of microtubules, consisting of 9 doublets of microtubules surrounding a pair of single microtubules?
both motile cilia and primary (nonmotile) cilia
centrioles only
both flagella and motile cilia
both basal bodies and primary (nonmotile) cilia
If an individual has abnormal microtubules due to a hereditary condition, in which organs or tissues would you expect dysfunction?
limbs, heart, areas with a lot of contraction
microvilli, alveoli, and glomeruli; cellular projections that increase surface area
all ducts, such as those from salivary or sebaceous glands, that transport fluids
sperm, larynx, and trachea; cells and tissues that contain flagella or cilia
Cytochalasin D is a drug that prevents actin polymerization. A cell treated with cytochalasin D will still be able to
form cleavage furrows
extend pseudopodia
contract muscle fibers
move vesicles around the cell
Cells require which of the following to form cilia or flagella?
tubulin
laminin
actin
intermediate filaments
All of the following serve an important role in determining or maintaining the structure of plant cells. Which of the following are distinct from the others in their composition?
microtubules
microfilaments
plant cell walls
intermediate filaments
What do the walls of plant cells and the ECM of animal cells have in common?
they are largely composed of phospholipids and glycoproteins
they have functional connections with the cytoskeleton inside the cell
their proteins are made by free cytoplasmic ribosomes
they limit the passage of small molecules
The cell walls of bacteria, fungi, and plant cells and the ECM of animal cells are all external to the plasma membrane. Which of the following is a characteristic common to all of these extracellular structures?
They must block water and small molecules in order to regulate the exchange of matter and energy with their environment
They must permit information transfer between the cell's cytoplasm and the nucleus
They must provide a rigid structure that maintains an appropriate ratio of cell surface area to volume.
They are constructed of polymers that are synthesized in the cytoplasm and then transported out of the cell.
When a potassium (K+) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the ion?
plasma membrane --> primary cell wall --> cytoplasm --> vacuole
secondary cell wall --> plasma membrane --> primary cell wall --> cytoplasm --> vacuole
primary cell wall --> plasma membrane --> cytoplasm --> vacuole
primary cell wall --> plasma membrane --> lysosome --> cytoplasm --> vacuole
The ECM is thought to participate in the regulation of animal cell behavior by communicating information from the outside to the inside of the cell via which of the following?
gap junctions
the nucleus
DNA and RNA
integrins
Plasmodesmata in plant cells are most similar to which of the following structures in animal cells?
peroxisomes
desmosomes
gap junctions
extracellular matrix
Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through
tight junctions
gap junctions
desmosomes
intermediate filaments
Signals from the ECM to the cytoskeleton may be transmitted by
fibronectin
proteoglycans
integrins
collagen
ECM proteins are made by ribosomes in which part of a eukaryotic cell?
nuclear envelope
Golgi apparatus
rough ER
cytoplasm
Which statements are true about integrins? (select two)
Integrins are protein receptors embedded within the plasma membrane of animal cells
Integrins are protein receptors embedded within the secondary cell wall of plant cells
Integrins function by passing water and small solutes through the cell wall
Integrins function by receiving a signal that docks with its receptor from the outside of the cell, then communicates that signal into the cell.
Which statements are true about plasmodesmata? (select two)
plasmodesmata are protein receptors embedded within the plasma membrane of animal cells
plasmodesmata are membrane lined channels that are embedded within the cell wall of plant cells
plasmodesmata function by passing water and small solutes through their channels
plasmodesmata function by receiving a signal that docks with its receptor from the outside of the cell, then communicates that signal into the cell.
Which statements are true about gap junctions? (select two)
gap junctions are composed of membrane bound proteins that surround a pore
gap junctions are found within the middle lamella of plant cells
gap junctions allow ions, amino acids, and sugars to pass through
gap junctions allow sheets of cells to maintain flexibility and prevent leakage
