Lipofuscin is a brownish pigment that may accumulate in:
a. Lipid droplets
b. Lysosomes
c. Mitochondria
d. Smooth endoplasmic reticulum
e. The cell nucleus
ANS: B
Lipofuscin represents the indigestible remnants of structures hydrolyzed in lysosomes. See 1-18.
You might also like to view...
Where is articular cartilage located?
A. It covers all bone surfaces. B. It covers all bone surfaces at articulations. C. It covers all long bone surfaces. D. It covers all long bone surfaces at articulations.
The cell membrane
A) has all of the above characteristics. B) provides a barrier to water-soluble substances. C) maintains the integrity of the cell. D) controls the entry and exit of various substances.
The ________ cavity contains the lungs, which are enfolded in the ________
A) thoracic; pericardium B) abdominopelvic; pleurae C) thoracic; peritoneum D) thoracic; pleurae E) abdominopelvic; peritoneum
Which of the following is gray matter?
A) nerves B) tracts C) neural cortex D) ganglia E) columns