Dead skin cells are shed in thin sheets because they are held together by "spots" of proteoglycan reinforced by intermediate filaments. Such strong intercellular connections are called
A) gap junctions.
B) intermediate junctions.
C) tight junctions.
D) desmosomes.
E) junctional complexes.
D
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The muscle disorder myotonic dystrophy can be caused by different genes, on different chromosomes. This means that the condition is genetically heterogeneic.
Answer the following statement true (T) or false (F)
List 4 plants that are toxic to goats
What will be an ideal response?
What are the basic units of organization of all organisms?
a. organelles b. organs c. molecules d. cells
In the stratum granulosum of the skin, keratinocytes are filled with basophilic keratohyaline granules. These granules form as a result of which intracellular process?
a. Accumulation of hyaluronic acid b. Degeneration of mitochondria c. Formation of aggregations of profilaggrin d. Fragmentation of the nucleus during keratinocyte apoptosis e. Synthesis of hemidesmosomes