Which of the following statements is NOT
TRUE concerning an electron that has
absorbed a photon?
a. It moves to a higher energy level.
b. It becomes more stable.
c. It quickly returns to its original energy
level.
d. It may emit energy.
e. It becomes excited
B
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What is the difference between 'bacteremia' and 'septicemia?'
A. Bacteremia is an infection with bacteria. Septicemia is an infection with Septic protozoans. B. Bacteremia is the presence of living, multiplying bacteria in the bloodstream. Septicemia is the presence of endotoxins, but not necessarily of living microbial agents. C. Septicemia is the presence of living, multiplying bacteria in the bloodstream. Bacteremia is the presence of endotoxins, but not necessarily of living microbial agents. D. There is no difference-both terms denote the presence of living bacterial cells in the bloodstream.
The rigid barrier that surrounds most prokaryotes is the
A. cell wall. B. cytoplasm. C. glycocalyx. D. cell membrane. E. flagellum.
If a glutamate-gated channel opens an _____ is produced.
A. Inhibitory post-synaptic potential (IPSP) B. Excitatory post-synaptic potential (EPSP) C. Action Potential D. Explosion
Which choice below correctly matches organelle with function?
A) smooth endoplasmic reticulum–lipid production B) lysosome–energy generation C) cytoskeleton–recycling of materials D) mitochondria–food generation