A cell contains 30% solute, while the external environment contains 10% solute. What kind of solution is this cell sitting in?
a. hypotonic
b. isotonic
c. hypertonic
d. osmotonic
a. hypotonic
Biology & Microbiology
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Which of the following scientists discovered penicillin?
A) Alexander Fleming B) Paul Ehrlich C) Selman Waksman D) Sir Howard Walter Florey
Biology & Microbiology
Which of the following is NOT a Gram-positive bacterium?
a. Clostridium b. Staphylococcus c. Streptococcus d. Salmonella e. Lactobacillus
Biology & Microbiology
Using Figure 56-1, what is the annual precipitation and temperature range for a temperate rain forest?
a. 300?400 cm/yr precipitation and 20?30 ?C b. 200?300 cm/yr precipitation and 20?30 ?C c. 200?300 cm/yr precipitation and 10?20 ?C d. 150?250 cm/yr precipitation and 10?20 ?C e. 150?250 cm/yr precipitation and 20?30 ?C
Biology & Microbiology
How many mutations do benign tumors have?
A. 1 B. 3 C. 4 or more
Biology & Microbiology