BIO 105 Lab Exam Practice Questions With Complete Solutions

What is the total magnification of an object if the ocular lens is 10X and the objective lens in 40X? - ANS 400X The condenser on a light microscope is used to - ANS Converge the beam of light so it passes through the specimen Which of the following is the correct order for the scientific method? - ANS Observation, hypothesis, experiment, conclusion, further testing Which statement is NOT true about a hypothesis? a. Experiments are performed to test a hypothesis b. hypothesis cannot be proven true c. hypothesis cannot be proven false d. Data can support a hypothesis but do not actually prove it e. If data from experiments do not support a hypothesis, the hypothesis must be rejected or revised - ANS e. If data from experiments do not support a hypothesis, the hypothesis must be rejected or revised A biological community, together with the abiotic factors in the area, is referred to a (n) - ANS Ecosystem A diversity index usually ranges from a 0 to a 3. A diversity index of 2.5 indicates that - ANS There are many species present in the sample with relatively similar number in each taxon When measuring species diversity, a _____ is often used to summarize data and compare diversity in different enviroments - ANS Species diversity index The Saco Heath is an example of - ANS Rasied peatland How are organic nutrients produced by photosynthesis transported within plants? - ANS Phloem sap In which tissue does most photosynthesis take place? - ANS Ground tissue What creates the main force within leaves that pulls the Xylem sap against gravity? - ANS Transpiration What lead structures allow the gas exchange necessary for photosynthesis & are regulated by guard cells? - ANS Stomata What type of population does the Hardy-Weinberg theorem describe? - ANS Non-evolving Which part of the Hardy-Weinberg formula represents the frequency of the recessive individuals? (p^2+2pq+q^2=1) - ANS q^2 What is the movement of alleles from one population's gene pool to the gene pool of another population? - ANS Gene flow How are protists classified on a cellular basis? - ANS Eukaryotic In which Kingdom are algae classified? - ANS Protista In which kind of symbiotic relationship do both organisms benefit? - ANS Mutualism What enzyme is produced by the symbiotic protists living inside termite intestines to digest wood? - ANS Cellulose How do fungi acquire nutrients? - ANS Absorption