Which five chemical elements make up 93-97% of the biomass in plants, animals, fungi, and bacteria?
a. carbon, oxygen, hydrogen, potassium, nitrogen
b. carbon, oxygen, hydrogen, sulfur, potassium
c. carbon, oxygen, hydrogen, sulfur, nitrogen
d. carbon, oxygen, hydrogen, nitrogen, phosphorous
e. carbon, oxygen, hydrogen, sulfur, phosphorus
Ans: d. carbon, oxygen, hydrogen, nitrogen, phosphorous
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House finches were found only in western North America until 1939, when a few individuals were released in New York City. These individuals established a breeding population and gradually expanded their range
The western population also expanded its range somewhat eastward, and the two populations have recently come in contact. If the two forms were unable to interbreed when their expanding ranges met, it would be an example of _____. A) prezygotic isolation B) reinforcement C) autopolyploidy D) allopatric speciation E) sympatric speciation
Gen-Probe Mycobacterium tuberculosis direct test uses which type of nucleic acid amplification test?
a. Nucleic acid sequence-based amplification (NASBA) b. Transcription-mediated amplification (TMA) c. Reverse transcriptase polymerase chain reaction (RT-PCR) d. Standard displacement amplification (SDA)
The overall ecological efficiency of most organisms is between ____ percent
a. 1 and 2 b. 2 and 5 c. 5 and 20 d. 10 and 50 e. 50 and 75
Which of the following is an example of dendrochronology?
A) measuring seedling recruitment B) counting juveniles in a population C) measuring finger bone size over time D) counting tree rings