What does the process of differential centrifugation achieve?
a. It analyzes the chemical components of the cell.
b. It allows researchers to view the contents of the cells.
c. It separates components of the cell that have different densities.
d. It separates different components of the cell that function differently.
e. It separates components of the cell that have a different chemical makeup
c
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Which of the following is NOT true of human gut microbes?
A) The population size is low, but diversity is high. B) They produce and excrete amino acids. C) They help catabolize polysaccharides. D) They are involved in the "maturing" of the gastrointestinal tract.
Most important biochemical reactions in an animal's body are catalyzed by enzymes. For each increase in temperature of 10oC, the rate of enzyme-catalyzed reactions
A. does not change. B. slows down by approximately 90%. C. slows down by approximately 50%. D. increases in rate approximately 2-3 fold. E. increases in rate by approximately 10 fold.
The biggest problem facing coastal habitats is not dumping but:
a. overfishing. b. river runoff. c. development. d. offshore oil spills. e. nuclear power plant leakage.
The ____ is the colored portion of the eye
Fill in the blank(s) with the appropriate word(s).