Which of the following is true of archaea that produce methane?
A. they reduce carbon dioxide in the presence of nitrogen
B. they live in the most extreme environments
C. they are always anaerobes
D. they have been discovered on Mars
Ans: B. they live in the most extreme environments
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In a typical application, a DNA microarray is used to compare the ____________________
a. expression of genes in two different tissues b. alleles of each chromosome c. length of DNA fragments in yeast vectors d. changes in gene sequences within an allele through generations of a single family e. protein products produced when using different DNA sequencing techniques
The proper technique for processing clotted body fluids sent to the laboratory for fungal culture is:
a. grinding them in a mortar and pestle or glass tissue grinder. b. placing small amounts of whole material from the clot directly onto media. c. centrifugation with glass beads. d. filtration under pressure.
Differentiate between macroevolution, microevolution, and speciation. What will be an ideal response?
By definition, an animal having a(n) closed circulatory system will also have a hemocoel
____________________ Indicate whether the statement is true or false.