Which phylum contains the greatest diversity of animal species?
A. Chordata
B. Echinodermata
C. Annelida
D. Arthropoda
E. Mollusca
Answer: D
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Assortative and disassortative mating are similar in that both ____
A. are kinds of selection pressure. B. change only the expected Hardy-Weinberg genotype frequencies in a population. C. are examples of random mating. D. change only the expected Hardy-Weinberg allele frequencies in a population. E. change both the expected Hardy-Weinberg allele and genotype frequencies in a population.
Four of the five answers listed below are types of complex tissue. Select the exception
a. phloem b. xylem c. epidermis d. parenchyma e. periderm
What is the significance of the conversion of pyruvate to lactate during fermentation?
A) Pyruvate becomes available to enter mitochondrial matrix reactions. B) ATP is produced at a higher rate. C) The citric acid cycle is initiated. D) The oxidation of pyruvate becomes possible. E) NAD+ is regenerated for use in glycolysis.
Immediate source of energy for organisms:
a. carbohydrates b. proteins c. fat