Quiz on SO 2

What are the three basic types of cell junctions mentioned?

• Plasmodesmata, tight junctions, anchoring junctions

• Tight junctions, anchoring junctions, gap junctions

• Cell-matrix adhesion complexes, gap junctions, desmosomes

• Adherens junctions, desmosomes, hemidesmosomes

Who discovered plasmodesmata?

• Eduard Strasburger

• Eduard Tangl

• Jean-Paul Revel

• Morris Karnovsky

What is the primary function of gap junctions?

• To prevent water from leaking between cells

• To link actin filaments between cells

• To allow direct diffusion of ions and small molecules

• To connect cells to the extracellular matrix

Which type of junction primarily links actin filaments between cells?

• Adherens junctions

• Hemidesmosomes

• Desmosomes

• Gap junctions

What do hemidesmosomes link cells to?

• The cell membrane

• The cytoskeleton

• The extracellular matrix

• Other cells

Which of the following is NOT a feature of anchoring junctions?

• Direct diffusion of ions

• Cytoskeleton involvement

• Adaptor proteins

• Transmembrane cell-adhesion molecules

What is the role of plasmodesmata in plant cells?

• Transporting large proteins

• Connecting symplastic space

• Facilitating cell migration

• Linking cells to the ECM

Which type of junction is particularly important in cardiac muscle?

• Desmosomes

• Hemidesmosomes

• Gap junctions

• Tight junctions

What do cell-matrix adhesion complexes (CMACs) primarily link?

• Cells to the cytoskeleton

• Cells to the extracellular matrix

• Cells to other cells

• Cells to the nucleus

Which of the following is a function of plasmodesmata?

• Facilitating cell division

• Regulating cell shape

• Transporting small signaling molecules

• Linking cells to the nucleus