Which aspects of polymerase chain reaction (PCR) make it such an effective and critical laboratory tool?
PCR is able to produce large quantities of DNA in a very short period of time.
PCR is inexpensive to perform and a relatively easy laboratory procedure to carry out.
PCR is highly sensitive and can amplify even the smallest quantity of DNA into billions of copies.
PCR is a vital tool in almost all genetic procedures performed in a laboratory today, and has a high rate of success.
All of the above are reasons supporting the statement that PCR is an effective and critical laboratory tool.
All of the above are reasons supporting the statement that PCR is an effective and critical laboratory tool.
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This sequence of questions is designed to help students understand the critical role bacteria and archaea play in the sulfur and nitrogen biogeochemical cycles. No one organism can perform all the reactions in the cycle
Some of these reactions are solely catalyzed by microbes, solidifying their necessity and importance in supporting all life on Earth. Consider the chemical reactions of the sulfur cycle shown in Figure 26.10 and the nitrogen cycle shown in Figure 26.11. Oceans constitute the most significant reservoir of sulfur in the biosphere, and sulfate (SO4 2- ) reduction is the most predominant form of anaerobic respiration in marine environments. In such cases, oxidized sulfur compounds like SO4 2- are the electron acceptors instead of what? A. water B. oxygen C. hydrogen D. carbon dioxide
Seed plants are _____
a. flowering plants d. spermatophytes b. conifers e. tracheophytes c. gymnosperms
Atrial Naturiuretic Peptide is produced in the
a. bloodstream. b. adrenal cortex. c. adrenal medulla. d. kidneys. e. heart.
Which one of the following incorrectly matches a molluscan group with a feature characterizing that group?
A. Polyplacophora-eight calcareous plates B. Gastropoda-torsion C. Bivalvia-reduced head and no radula D. Nudibranchs-extensive gills in mantle cavity E. Cephalopoda-closed circulatory system