Which of the following is an example of a density-independent factor that affects population growth?
a. food availability
b. disease
c. earthquakes
d. predation
c. earthquakes
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Answer the following questions true (T) or false (F)
1. Giardiasis and cryptosporidiosis are both caused by helminth infections. 2. No bacteria have been detected in the semen of healthy men. 3. A urine dipstick test is negative for elevated nitrite, but bacteriological culturing reveals Gram-positive cocci. Uropathogenic Escherichia coli is indicated.
Both Giardia lamblia and parvum are resistant to chlorine
Indicate whether this statement is TRUE or FALSE.
Nearly all viruses are constructed of
A. RNA with a protein wrapping, called a capsid. B. DNA with a protein wrapping, called a capsid. C. either DNA or RNA with a protein wrapping, called a capsid. D. either DNA or RNA, however many do not have the capsid.
Which type of cell death typically occurs during cell division?
a) Mitotic death b) Interphase death c) Necrosis d) Metaphase death