A lichen is an example of:
A. a pathogen
B. a parasite
C. an archaean
D. a methanogen
E. a mutualistic relationship
E. a mutualistic relationship
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Which test is especially good for bacteria that are not readily cultivated in the lab?
A. Direct fluorescence antibody (DFA) test B. Dichotomous key analysis C. Phage test D. Direct antigen test E. Gram stain
Which of the following statements about the voyage of the Beagle is TRUE?
A) Its purpose was to identify the fastest route from the Atlantic to the Pacific Ocean. B) It lasted almost 2 years. C) It turned into a tremendous opportunity for Darwin to collect fossils, plants, and animals. D) It ended with the sinking of the ship off of the coast of Australia, almost 4 years into its journey.
Which of these stages were a focus of study for Miller and Urey in their FIRST experiment?
Study of the origin of life has resulted in the breakdown of cellular development into overlapping stages, beginning with the synthesis of precursor molecules for the synthesis of nucleotides and amino acids and ending in polymers enclosed in membranes acquiring cellular properties. A. Stage 1: Nucleotides and amino acids were produced prior to the existence of cells. B. Stage 2: Nucleotides became polymerized to form RNA and/or DNA, and amino acids became polymerized to form proteins. C. Stage 3: Polymers became enclosed in membranes. D. Stage 4: Polymers enclosed in membranes acquired cellular properties. E. Stage 5: Ribosomes were developed inside the membrane.
The autonomic nervous system regulates
A. blood pressure. B. heart contractions. C. digestive system function. D. skeletal muscle contractions. E. All of these answers are correct except "skeletal muscle contractions."