Taken directly from an AP Bio Test Practice Material as well as answer key.
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| 12481696775 | [D] interactions between amino acids present in the polypeptide. | [2] 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. | 0 | |
| 12481696776 | [B] Two | [3] 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 | 1 | |
| 12481696777 | [C] swell and lyse | [4] 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 | 2 | |
| 12481696778 | [A] A triglyceride | [7] Metabolism of which the following molecules results in the greatest net usable energy per gram? ----------------------------------------------- [A] A triglyceride [B] A tripetide [C] An alpha-linked disaccharide [D] A beta-linked disaccharide [E] An anabolic steriod | 3 | |
| 12481696779 | [B] rough endoplasmic reticulum | [8] 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 | 4 | |
| 12481696780 | [C] Prokaryotes are structurally less complex than eukaryotes are. | [9] 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. [D] Prokaryotes require a host to replicate, while eukaryotes do not. [E] Prokaryotes lack a cell membrane, while eukaryotes do not. | 5 | |
| 12481696781 | [C] The inhibitor binds to the enzyme but not at its active site. | [16] Which of the following best describes allosteric inhibition of an enzyme? ----------------------------------------------- [A] The inhibitor binds to the mRNA to prevent translation of the enzyme. [B] The inhibitor binds to the enzyme substrate. [C] The inhibitor binds to the enzyme but not at its active site. [D] The inhibitor binds to the enzyme at its active site. [E] the inhibitor binds to the gene that encodes for the enzyme. | 6 | |
| 12481696782 | [A] Lysosome . . lipid hydrolysis | [17] Which of the following organelles is correctly matched with its function? ----------------------------------------------- [A] Lysosome . . hydrolysis [B] Nucleolus . . protein synthesis [C] Ribosome . . carbohydrate synthesis [D] Mitochondrion . . Calvin cycle [E] Endoplasmic reticulum . . transcription | 7 | |
| 12481696783 | [E] Rough endoplasmic reticulum --> Golgi complex --> vesicle --> plasma membrane | [22] A protein is synthesized and transported to the plasma membrane. Which of the following summarizes the protein's pathway in the cell? ----------------------------------------------- [A] Smooth endoplasmic reticulum --> nucleus --> vesicle --> plasma membrane [B] Plastid --> rough endoplasmic reticulum --> plasma membrane [C] Nucleus --> vesicle --> rough endoplasmic reticulum --> plasma membrane [D] Smooth endoplasmic reticulum --> microfilament --> vesicle --> plasma membrane [E] Rough endoplasmic reticulum --> Golgi complex --> vesicle --> plasma membrane | 8 | |
| 12481696784 | [A] Plant cell mitochondria consume oxygen by aerobic respiration. | [28] A scientist studying the oxygen concentration in sealed chambers containing cultured plant cells finds that when the chambers are illuminated, the concentration of oxygen increases. However, when the chambers are kept in the dark, the concentration of oxygen decreases. Why does the oxygen concentration decrease when the chamber is kept in the dark? ----------------------------------------------- [A] Plant cell mitochondria consume oxygen by aerobic respiration. [B] Plant cell chloroplasts run the photosynthetic pathways backward to consume oxygen. [C] Plant cell chloroplasts switch their structure and function and become mitochondria. [D] The chambers must not be properly sealed, so that oxygen is leaking out. [E] The cultures in the chambers must be contaminated with some animal cells, since only animal cells consume oxygen. | 9 | |
| 12481696785 | [D] Atoms --> molecules --> cells --> organisms --> ecosystems | [31] Which of the following statements most correctly represents the organization of living systems from smallest to largest? ----------------------------------------------- [A] Molecules --> organs --> cells --> organisms [B] Cells --> tissues --> molecules --> ecosystems --> communities [C] Organisms --> molecules --> cells --> atoms [D] Atoms --> molecules --> cells --> organisms --> ecosystems [E] Organs --> plants --> animals --> cells | 10 | |
| 12481696786 | [C] Ribosome | [66] Site of protein synthesis [Match] ----------------------------------------------- [A] Nonsense codon [B] Anticodon [C] Ribosome [D] Exon [E] Poly-A tail | 11 | |
| 12481696787 | [B] 6 | [77] After 10 days, the distilled water culture dish has approximately how many duckweed plants? ----------------------------------------------- [A] 3 [B] 6 [C] 9 [D] 12 [E] 15 |  | 12 |
| 12481696788 | [C] 1 plant per 3 days | [78] In pond water, the duckweed population grows at an average rate of: ----------------------------------------------- [A] 1 plant per day [B] 2 plants per day [C] 1 plant per 3 days [D] 3 plants per day [E] 9 plants per 15 days | | 13 |
| 12481696789 | [E] N-P-K fertilizer solution | [79] Duckweed vegetatively reproduced at the fastest rate in: ----------------------------------------------- [A] pond water [B] nitrate-enriched distilled water [C] pond water with added chlorophyll [D] distilled water [E] N-P-K fertilizer solution | | 14 |
| 12481696790 | [D] An increase in light intensity | [80] Under which of the following additional conditions would the duckweed population be most likely to grow faster? ----------------------------------------------- [A] Oxygen gas bubbled through the culture dishes [B] The addition of an organism that eats duckweed [C] The addition of distilled water to every culture dish [D] An increase in light intensity [E] The addition of glucose to the culture medium | | 15 |
| 12481696791 | [C] The highest rate of carbon dioxide uptake occurs near the end of the dark period. | [81] Which of the following is consistent with the data? ----------------------------------------------- [A] The highest rate of carbon dioxide uptake occurs at the beginning of the light period. [B] The highest rate of carbon dioxide uptake occurs at the beginning of the dark period. [C] The highest rate of carbon dioxide uptake occurs near the end of the dark period. [D] The highest starch concentration occurs at the beginning of the light period. [E] The lowest starch concentration occurs at the end of the light period. |  | 16 |
