The type of intercellular junction that functions as a rivet or "spot weld" is a(n)
A) gap junction. B) tight junction.
C) ion channel. D) desmosome.
D
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During the process of urine formation, molecules and Ions are passively and actively reabsorbed from the glomerular filtrate back into the blood of the peritubular capillary network. This is call ___
Fill in the blank(s) with correct word
Pyruvate dehydrogenase is located in the
A. cell membrane. B. middle of the crista. C. outer compartment of the mitochondrion. D. matrix of the mitochondrion. E. cytosol.
What is NOT a function of the peroxisome?
A) oxidize toxic substances B) break down fatty acids C) synthesize certain phospholipids D) protein synthesis
The skin is a barrier to all of the following except ________
A) water B) UV rays C) infectious organisms D) metals such as mercury