Which part of the microscope will be used first to adjust the focus when starting with the lowest power lens?
a. mechanical stage
b. condenser adjustment knob
c. coarse focus adjustment knob
d. fine focus adjustment knob
Ans: c. coarse focus adjustment knob
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You wish to test the same unknown food for the presence of sugars. Describe how you would do so
What will be an ideal response?
______ collagen is the most rigid and is very abundant in bones and tendons?
A. Type IV B. Type V C. Type I D. Type III E. Type II
In mammals and some reptiles, the coelom is divided into smaller cavities that enclose the lungs, heart, and gut. What are these cavities called?
A. pleural, pericardial, and peritoneal cavities B. thoracic, pleural, and pericardial cavities C. pleural, pericardial, and cardial cavities D. perithoracic, peritoneal, and pericardial cavities
Which of the following is true of transmembrane proteins?
a. The signal sequences are always cleaved off. b. They are always inserted with the amino terminus on the lumenal side and the carboxyl terminus in the cytosol. c. They cross the membrane only once. d. They usually have one or more helices spanning the membrane bilayer.