Which scientist showed that anthrax was caused by the bacterium Bacillus anthracis?
A. Antonie van Leeuwenhoek
B. Joseph Lister
C. Louis Pasteur
D. Ignaz Semmelweis
E. Robert Koch
Answer: E
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Both gymnosperms and angiosperms form seeds, which can travel over long distances (either via wind or water). Which of the following are benefits of seed production and dispersal? Select all correct choices
A. Seeds can introduce offspring into environments with ample light. B. Seeds can introduce offspring into pathogen-free environments. C. Seeds can introduce offspring into nutrient -rich environments.
Suppose that an infectious agent, such as a virus or bacterium, had surface antigens identical to those displayed on the surface of human cells. Would the immune system be able to detect and destroy these agents? Why or why not?
What will be an ideal response?
Individuals with Xeroderma pigmentosum inherit a faulty DNA repair mechanism. How does this disorder manifest in a patient?
a. The patient is sterile. b. The Okazaki fragments produced during DNA replication cannot join. c. No proofreading occurs during DNA replication. d. The patient easily develops skin cancer when exposed to sunlight.
Of all organisms, prokaryotes are the ____.
A. smallest B. least abundant C. least metabolically diverse D. least widespread E. most internally complex