PRAXIS BIOLOGY QUESTIONS AND ANSWERS ALREADY PASSED

PRAXIS BIOLOGY QUESTIONS AND ANSWERS ALREADY PASSED Which of the following terms indicates the ecological role that an organism plays in a community? A. Biome B. Niche C. Ecotone D. Territory Niche Which of the following characteristics distinguishes members of the domain Eukarya from members of the domains Archaea and Bacteria? A. The ability to perform photosynthesis B. The ability to replicate chromosomes C. The presence of RNA polymerase D. The presence of a nuclear envelope The presence of a nuclear envelope Valine is typically classified as a hydrophobic amino acid because a valine molecule has which of the following types of side chains? A. Polar and neutral B. Nonpolar C. Positively charged D. Negatively charged Nonpolar A teacher asks students to describe how the data collected in an experiment are typically used as evidence. Which of the following responses is the most accurate? A. "The data are used to confirm an existing belief." B. "The data are used as facts that cannot be questioned or criticized." C. "The data are used to support or reject a hypothesis." D. "The data are used to make a theory into a law." "The data are used to support or reject a hypothesis." Which of the following biomes is characterized by long winters and short summers snow as the predominant form of precipitation soil that is acidic and poor in nutrients and wooded areas made up mostly of evergreen trees with needlelike leaves? A. Savanna B. Boreal forest C. Hot and dry desert D. Tropical rain forest Boreal forest One strand of a certain segment of DNA has the following nucleotide sequence. 5' - A G A T G T C C A G T A - 3' The complementary strand in the same segment of DNA most likely has which of the following nucleotide sequences? A. 3' - T C T A C A G G T C A T - 5' B. 3' - C T C G T G A A C T G C - 5' C. 3' - G A G C A C T T G A C G - 5' D. 3' - A G A T G T C C A G T A - 5' The overall process of aerobic cellular respiration is best described as the oxidation of glucose to produce carbon dioxide and the reduction of oxygen to produce which of the following? A. ADP B. NADH C. Sucrose D. Water Water A student uses stationary fans to investigate the effect of wind on water loss by plants. The student divides the plants into three treatment groups and places each group in front of a fan. The student sets the fan for each group to one of three different levels: low medium or high. After 24 hours the student determines the amount of water that was lost by each plant. To create a bar graph of the results the student should make the height of each bar represent which of the following? A. The fan speed for each treatment group B. The number of plants in each treatment group C. The average water loss for each treatment group D. The duration of wind exposure for each treatment group The average water loss for each treatment group