A student is viewing a single-celled organism under low-power objective of a compound light microscope . Describe an adjustment the student would need to make to see the organism clearly after switching from low power to hight power. In your description include the name of the part of the microscope that would be used to make the adjustment.
What will be an ideal response?
Ans: The student could adjust the fine focus with the fine adjustment knob, or adjust the disk diaphragm to let more light pass through the specimen.
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What causes climate fluctuations described by the Milankovitch cycles?
a. large colonies of oceanic algae b. changes in solar radiation due to sun spots c. minor changes in the Earth’s orbit d. methane emissions from cattle
The deer population in many parts of the northeastern United States is perceived to be out of control. What solutions to this problem would you deem to be the most feasible? (Select and defend one or more of the solutions listed below.) a. Increasing human predation by increasing the length of hunting season . b. Lowering the birth rate of the deer by putting out feed laced with
birth-controlchemicals. c. Increasing the rate of predation by re-introducing natural predators such asbobcats and mountain lions. d. There is no absolute correct answer to this question since each choice, althoughit will impact the deer population, has its pros and cons.
What process increases the size of a muscle?
a. increased muscle cell division b. addition of muscle companion cells c. stretching of individual muscle cells d. synthesis of new protein filaments e. more than one of these
Which disease is transmitted via ingestion of contaminated water and can cause paralysis?
a) Rabies b) Japanese encephalitis c) West Nile encephalitis d) Polio