Answer the following statements true (T) or false (F)
1. A magnifying glass could be considered a simple microscope.
2. The total magnification achieved when the oil immersion lens is used is 1,000 ×.
3. Fluorescence microscopy is often used in immunology laboratories.
4. The resolving power of electron microscopes is much better than that of compound light microscopes because the wavelength of electrons is much longer than that of visible light.
5. Primary syphilis is usually diagnosed in the clinical microbiology laboratory by the use of a scanning electron microscope.
1. TRUE
2. TRUE
3. TRUE
4. FALSE
5. FALSE
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C. gel electrophoresis A small amount of DNA is collected from a crime scene. However, the amount of DNA collected is insufficient to perform the necessary experiments to link a suspect to the crime. What method could be utilized to increase the amount of DNA?
A. Southern blotting B. gel electrophoresis C. polymerase chain reaction (PCR) D. colony hybridization E. DNA sequencing
The tube-like structures extending from these
bacterial cells in the picture above to the underlying cells in the above figure are used for a. attachment. b. locomotion. c. whipping up proteins. d. breathing. e. communication
Germ cells are ____
a. found in the zygote b. destined to become gametes c. programmed to become the placenta d. found within the egg prior to fertilization e. larger in size than the original egg
A semisynthetic antibiotic is a drug which is chemically modified in the laboratory after being isolated from natural sources.
Answer the following statement true (T) or false (F)