The main advantage of the scanning electron microscope over the conventional electron microscope is that it
A) operates in light.
B) is capable of higher magnification than the ordinary electron microscope.
C) produces three-dimensional images.
D) uses more protons than electrons.
E) requires fewer beams of electrons.
Answer: C
You might also like to view...
Keena is starting a new job that requires her to learn many policies and procedures. She had to study a large handbook and pass an exam prior to officially starting to work. She studied for weeks and passed the exam, but then got sick the day before she
was supposed to work her first shift. How would the field of psychoneuroimmunology explain why Keena got sick? a. The stress she was experiencing decreased her cortisol, which increased the functioning of her immune system. b. The stress she was experiencing increased her cortisol, which decreased the functioning of her immune system. c. The stress she was experiencing increased her cortisol, which increased the functioning of her immune system. d. The stress she was experiencing decreased her cortisol, which decreased the functioning of her immune system.
In 1978, nearly 30% of children aged 5 to 10 years had dangerously elevated levels of lead in their blood, which can cause brain damage. What was the rate in 2001?
A. 1% B. 11% C. 21% D. 31%