The current rate of extinctions is about ____ times faster than normal
a. 10
b. 100
c. 1000
d. 100,000
e. 1,000,000
ANSWER: c
You might also like to view...
Escherichia coli have been transformed with the luciferase gene so that emissions of light can serve as indicators of ________
a. contamination of meat and other foods b. pathogenecity c. contamination of laboratory surfaces d. metabolic activity
DNA fingerprinting makes use of variations in ________ within the population
a. the hemoglobin gene b. homeodomains c. short tandem repeats d. the entire genome
Which of the following best defines the Bohr effect?
a. The amount of a gas that diffuses across a membrane depends on the differences in the gas' partial pressure. b. The ability of hemoglobin to bind oxygen depends on the partial pressure of oxygen. c. In a mixture of gases, the total pressure of the mixture is the sum of the pressures of the individual gases. d. pH causes a displacement of the oxygen-hemoglobin dissociation curve. e. As the concentration of chloride ions increases, the ability of hemoglobin to bind carbon dioxide decreases.
In nonvascular plants, sperm are formed in antheridia by mitosis
Indicate whether the statement is true or false