Which of the following should I adjust on my microscope if the specimen I am viewing appears very faded or "washed out" from the intense light entering the microscope?
a. Coarse adjustment knob
b. Fine adjustment knob
c. Iris diaprhagm
d. Stage
e. Objective lens
Answer: c. Iris diaprhagm
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Stem cells
A. have an almost unlimited capacity to divide. B. can differentiate into different tissues. C. may be used to test the effects of drugs on human cells. D. come from fetal material. E. All of the above
You isolate a cellular structure and determine that it is composed of ?-tubulin and ?-tubulin. Based on
this evidence, you correctly identify this structure as: a. a structural MAP. b. a microfilament. c. a microtubule. d. an actin filament. e. a myosin filament.
Which disorder of the eye is due to the cornea or lens being uneven resulting in a fuzzy image?
A. nearsightedness B. glaucoma C. astigmatism D. color blindness E. farsightedness
The network of connective tissue fibers which pass through the tissues of the body and allow for the efficient movement of immune system cells is the
A) Reticuloendothelial system. B) Circulatory system. C) Lymphatic system. D) Extracellular fluid system.