Cell Junctions quiz #2 Flashcards
Cell Junctions quiz #2
You can tap to flip the card.
Control buttons has been changed to "navigation" mode.
1/26Skip to main content
Which of the following junction types is only found in plants? A) Tight junctions B) Anchoring junctions C) Gap junctions D) Plasmodesmata
D) Plasmodesmata Plant cells can communicate with each other using what structure?
Plasmodesmata Which of these cell junctions are open channels that connect the cytoplasm of adjoining plant cells?
Plasmodesmata Gap junctions and plasmodesmata have what feature in common?
Both form channels that allow cytoplasmic exchange between neighboring cells. Which of the following structures prevents cell lysis for plant cells? A) Cell wall B) Tight junctions C) Gap junctions D) Desmosomes
A) Cell wall Which plant structure is most like gap junctions in animal cells?
Plasmodesmata Which of the following allows communication between plant cells? A) Tight junctions B) Desmosomes C) Gap junctions D) Plasmodesmata
D) Plasmodesmata Which cell junction will allow the movement of molecules between two plant cells?
Plasmodesmata Which cell junctions form channels between adjacent plant cells?
Plasmodesmata Which form of cell communication is used to relate to other cells in direct physical contact?
Cell junctions, such as gap junctions in animal cells and plasmodesmata in plant cells, facilitate direct physical contact and communication. What are plasmodesmata? What is their importance to living plant cells?
Plasmodesmata are channels that traverse the cell walls of plant cells, allowing for the transport and communication of substances between adjacent cells, thus playing a crucial role in plant tissue organization and nutrient distribution. What is the primary function of tight junctions in animal cells?
Tight junctions create leak-proof barriers by holding adjacent cells very tightly together, preventing the passage of liquids between them. How do gap junctions facilitate communication between animal cells?
Gap junctions form protein channels that directly connect the cytoplasm of adjacent animal cells, allowing the exchange of nutrients and signaling molecules. Why are tight junctions important in tissues such as the lining of the stomach or intestines?
Tight junctions prevent the leakage of digestive fluids and other substances between cells, maintaining a controlled environment within the tissue. Which cell junction type is unique to plant cells and not found in animal cells?
Plasmodesmata are unique to plant cells. How do gap junctions differ from tight junctions in their function?
Gap junctions allow direct cytoplasmic exchange between cells, while tight junctions prevent any passage of substances between cells. In which type of cell would you expect to find plasmodesmata?
Plasmodesmata are found in plant cells. Why are anchoring junctions important for tissues that experience mechanical stress?
Anchoring junctions provide structural support by holding cells together, helping tissues withstand mechanical stress. Which cell junction type would be most important in preventing the passage of pathogens between cells in epithelial tissue?
Tight junctions are most important for preventing the passage of pathogens between cells. How do anchoring junctions contribute to tissue integrity?
Anchoring junctions connect cells together, providing mechanical strength and maintaining tissue structure. Which type of cell junction allows for the direct transfer of ions and small molecules between animal cells?
Gap junctions allow for the direct transfer of ions and small molecules between animal cells. What structural feature allows anchoring junctions to withstand mechanical stress?
Intermediate filaments anchored to complex protein structures provide strength to anchoring junctions. Which junction type is primarily responsible for holding animal cells together in tissues that stretch, such as skin?
Anchoring junctions (desmosomes) are primarily responsible for holding animal cells together in stretchable tissues. How do plasmodesmata differ structurally from gap junctions?
Plasmodesmata are channels through plant cell walls, while gap junctions are protein channels connecting animal cell membranes. What is the main function of the protein channels formed by gap junctions?
The protein channels of gap junctions allow direct exchange of ions, nutrients, and signaling molecules between cells. Which cell junction type is responsible for forming a continuous seal around cells?
Tight junctions form a continuous seal around cells.
05:42
