Life is only possible with a continuous input of _____.
A) atoms
B) nutrients
C) energy
D) molecules
Answer: C) energy
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Sea stars belong to the
A. Asteroidea. B. Holothuroidea. C. Echinoidea. D. Crinoidea.
Genetic map units represent
a. absolute physical distances between genes. b. locations of different alleles of a gene. c. the chromosome on which a given gene is located. d. the actual DNA sequence of a gene. e. relative positions of genes with respect to each other.
Biocontrol, short for biological control, is a means to control pest populations (e.g., insects, plants) by intentionally introducing natural enemies of those pests
Biocontrol methods have benefits of typically being less expensive and less environmentally damaging than chemical pesticides. Which of the following should NOT be considered an example of biocontrol? A) the spores of the Chinese caterpillar fungus that are sprayed on crop pests to parasitize and kill them B) the application of herbicides that kill weeds harboring pest populations C) the introduction of mites that prey upon citrus rust mites that infest and destroy citrus crops D) the introduction of insect herbivores that eat weeds but do not feed on native plant species
Lyme disease is caused by
A) nitrogen-fixing bacteria. B) rats. C) Borellia burgdorferi. D) Clostridium botulinum. E) contaminated water.