The organelle that protects cells from the damaging effects of medications and toxins is the ________.
A. smooth endoplasmic reticulum
B. microtubule
C. secretory vesicle
D. mitochondria
E. ribosome
Answer: A
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The production of leukocytes is called ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following membrane-enclosed organelles can engulf a worn-out organelle, digest its chemical components, and recycle those digested components?
a) peroxisomes b) mitochondria c) proteasome d) ribosomes e) lysosomes
A neuron that has as its primary function the job of connecting other neurons is called a(n) ________.
A) efferent neuron B) afferent neuron C) association neuron D) glial cell
The kidney ducts, bladder, thyroid gland, and tonsils all develop from the primary germ layer called the:
a. ectoderm b. mesoderm c. endoderm d. none of the above