aptestsample - Sample AP EXAM home | AP Bio | Honors Bio |...

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Sample AP EXAM home | AP Bio | Honors Bio | CP Bio | calendars | Visit the Lab test yourself Multiple-Choice Questions Examples of the kinds of objective questions that may be used in the examination f ollow. This is NOT a complete examination. (These questions come from the "Acorn" book from AP Central.) Directions: Each of the questions or incomplete statements below is followed by five suggested answers or completions. Select the one that Sis best in each case. 1. Which of the following best describes an intimate ecological association in which an organism benefits from living on or within a host, but which generally has a negative effect on that host? (A) Mutualism (B) Saprophytism (C) Commensalism (D) Parasitism (E) Predation 2. While studying a cell with the electron microscope, a scientist notes the following: numerous ribosomes, a well-developed endoplasmic reticulum, chloroplasts, and a cell wall. Which of the following could be the source of this cell? (A) A fungus (B) An animal (C) A bacterium (D) A plant (E ) A virus 3. Which of the following statements best summarizes organic evolution as it is viewed by modern evolutionists? ( A ) It is goal directed. ( B ) It represents the results of selection for acquired characteristics. ( C ) It is synonymous with the process of gene flow. ( D ) It is the descent of humans from the present-day great apes. ( E ) It is the differential survival and reproduction of certain phenotypes. 4. If a segment of DNA is 5'-TAC GAT TAG-3', the RNA that results from the
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transcription of this segment will be ( A ) 3'-TAC GAT TAU-5' ( B ) 3'-ATG CTA ATA-5' ( C ) 3'-UAC GAU UAG-5' ( D ) 3'-AAC GAU UAA-5' ( E ) 3'-AUG CUA AUC-5' 5. The bones of a human arm are homologous to structures in all of the following EXCEPT a ( A ) whale flipper B ) bat wing ( C ) butterfly wing ( D ) bird wing ( E ) frog forelimb 6. Regarding mitosis and cytokinesis, one difference between higher plants and animals is that in plants ( A ) the spindles contain cellulose microfibrils in addition to microtubules, whereas animal spindles do not contain microfibrils ( B ) sister chromatids are identical, whereas in animals they differ from one another ( C ) a cell plate begins to form at telophase, whereas in animals a c leavage furrow is initiated at that stage ( D ) chromosomes become attached to the spindle at prophase, whereas in animals chromosomes do not become attached until anaphase ( E ) spindle poles contain centrioles, whereas spindle poles in animals do not 7. A common feature of starch and glycogen is that molecules of both ( A ) form microfibrils that give support to connective tissue fibers ( B ) contain repeated monomers of glucose and galactose ( C ) are important structural components of plant cell walls ( D ) are polymers of glucose ( E ) are water-soluble disaccharides 8. The ancestors of land plants most likely resembled modern day members of the ( A ) Cyanobacteria (blue-green algae) ( B ) Rhodophyta (red algae) ( C ) Chlorophyta (green algae) ( D ) Phaeophyta (brown algae) ( E ) Chrysophyta (diatoms and golden-brown algae) 9. Which of the following offers the best description of neural transmission across a mammalian synaptic gap?
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