AP Biology Practice Exam

AP Biology Practice Exam Which of the following is true of both mitochondria and chloroplasts? A. They are found in the cells of eukaryotic autotrophs and chloroplasts B. They include stacks of membranes that absorb light C. They include compartments where hydrogen ions are concentrated D. They produce sugars using energy harvested in the cytoplasm E. They break down sugar to produce ATP C. They include compartments where hydrogen ions are concentrated The tertiary structure and function of a polypeptide is principally determined by the A. length of the polypeptide B. number of nucleotides present in the polypeptide C. repeated units of glycerol making up the polypeptide D. interactions between amino acids present in the polypeptide E. number of introns within the polypeptide D. interactions between amino acids present in the polypeptide In a species that has five different alleles for a gene at a particular locus, how many different alleles may be present in the somatic cells of one diploid individual? A. one B. two C. three D. four E. five B. Two If red blood cells cultured in an isotonic medium are placed in distilled water, they will most likely A. remain unchanged B. shrivel C. swell and lyse D. divide E. become dormant C. swell and lyse The best evidence that the giant panda is more closely related to bears than is the racoonlike lesser panda involves A. comparative anatomy B. comparative embryology C. DNA sequence comparisons D. behavioral similarities E. fossil records C. DNA sequence comparisons Metabolism of which of the following molecules results in the greatest net usable energy per gram? A. a triglyceride B. a tripeptide C. an alpha-linked disaccharide D. a beta-linked disaccharide E. an anabolic steroid A. a triglyceride Cells that make up salivary glands would be expected to contain a relatively large amount of A. smooth endoplasmic reticulum B. rough endoplasmic reticulum C. genetic material D. lipids E. peroxisomes B. rough endoplasmic reticulum Which of the following characteristics distinguishes prokaryotic organisms from eukaryotic organisms? A. Prokaryotes are unicellular, while all eukaryotes are multicellular. B. Prokaryotes are aquatic, while eukaryotes are terrestrial. C. Prokaryotes are structurally less complex than eukaryotes are.