Adaptation to oxygen concentration
What will be an ideal response?
-obligate aerobe: need O2
-facultative anaerobe: prefer O2
-aerotolerant anaerobe: ignore O2
-strict anaerobe: O2 is toxic
-Microaerophile: <2-10% O2
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Which of the following statements is NOT a correct description of an advantage that seeds have over spores?
A. Seeds can remain dormant and survive unfavorable conditions. B. Seeds are produced in greater numbers than spores. C. Seeds are tougher and can resist abrasion better than spores. D. Seeds are more resistant to pathogens. E. Production of seeds does not require water as a medium for sperm transport.
The number one worldwide infectious diseases are ________.
A. respiratory diseases B. AIDS-related diseases C. malaria and other protozoan diseases D. measles and other rash diseases E. diarrheal diseases
Bacterial __________ cause systemic symptoms such as fever, whereas bacterial __________ cause
more specific maladies. a. phages; prophages b. prophages; phages c. endotoxins; exotoxins d. exotoxins; endotoxins e. exotoxins; phages
In the female, __________ stimulates follicle maturation
a. GnRH b. LH c. FSH d. estrogen e. progesterone