Which scientist showed that anthrax was caused by the bacterium Bacillus anthracis?
A) Joseph Lister
B) Antonie van Leeuwenhoek
C) Ignaz Semmelweis
D) Robert Koch
E) Louis Pasteur
D) Robert Koch
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What is the major difference between the endosymbiotic relationship theory and the symbiotic relationship theory?
A. In the endosymbiotic relationship theory a archaeon engulfs a bacterium while in the symbiotic relationship theory a archaeon and bacterium unite, joining their plasma membranes. B. In the endosymbiotic relationship theory an archaeon and bacterium unite, joining their plasma membranes while in the symbiotic relationship theory an archaeon engulfs a bacterium. C. The endosymbiotic relationship theory explains the origin of mitochondria and chloroplasts, but not the nucleus; the symbiotic relationship theory explains the origin of mitochondria, chloroplasts and the nucleus. D. The symbiotic relationship theory explains the origin of mitochondria and chloroplasts, but not the nucleus; the endosymbiotic relationship theory explains the origin of mitochondria, chloroplasts and the nucleus.
The instructions for assembling proteins are contained in the
a. introns b. genes c. ribosomes d. exons
EPSP is a process of activating postsynaptic neuron by (i) ________ of the membrane that is accompanied by (ii) ___ influx.
a) (i) depolarization, (ii) Na+ b) (i) hyperpolarization, (ii) Na+ c) (i) depolarization, (ii) Cl- d) (i) hyperpolarization, (ii) Cl-
All of the following are lipids except:
a. cholesterol b. wax c. fat d. oil e. sugar