What category describes a species that, while not presently at risk of extinction, could likely be at risk of extinction in the near future?
A. A species of concern
B. A threatened species
C. An invasive species
D. An endemic species
Answer: B
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Parathion is effective and highly toxic to only about 5% of the human population
a. True b. False Indicate whether the statement is true or false
A scientist studying the sequence of nucleotides in the rRNA of a bacterial species is working on
A. nomenclature. B. determining evolutionary relatedness. C. recombinant DNA. D. determining if that species is the cause of a new disease. E. bioremediation.
Rhodopsin
a. is a pigment. b. is found in rods. c. absorbs photons of blue-to-green light. d. molecules changing shape start transduction. e. includes all of these descriptions.
Most of the oxygen found in the blood is ____
a. bound to hemoglobin b. dissolved in the plasma c. dissolved in platelets d. bound to albumin e. bound to copper