What is the function of the structure labeled #12?
A) intracellular removal of damaged organelles or pathogens
B) breakdown and recycling of damaged or abnormal intracellular proteins
C) protein synthesis
D) movement of material over cell surface
E) catabolism of fats and other organic compounds
A) intracellular removal of damaged organelles or pathogens
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One "strong" stimulus can cause more than one action potential, but a "weak" stimulus may or may not generate an action potential
Indicate whether the statement is true or false
Raul's father tells him not to slouch, and to put his shoulders back. What specifically must Raul do to improve his posture?
A. Depress his scapulae B. Retract his scapulae C. Medially rotate his humerus D. Laterally rotate his humerus
Which of the following cells are arranged in layers, or strata, in the epidermis?
A) keratinocyte B) Merkel cell C) melanocyte D) dendritic (Langerhans) cell
The plasma membrane is permeable to ________, but impermeable to ________
A) proteins; nutrients B) nutrients; wastes C) nutrients; proteins D) wastes; nutrients E) phosphates; wastes