Biological magnification can be defined as the:
a. concentration of a chemical in organisms increasing as the pollutant moves up a food chain
b. energy transfer increasing as it moves up a food chain
c. fixation of nutrients from the atmosphere
d. entrance into the biological portion of a biogeochemical cycle
e. increase in food web members in biologically diverse ecosystems
a
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Which of the following traits is considered Mendelian?
A) A trait which is caused by linked genes B) A trait which is caused by a single gene C) A trait which is caused by environmental factors D) A trait which is multifactorial
When referring to cell division, oncogenes are most like ________ while tumor suppressor genes are most like ________
A) the brakes on a car… the gas pedal on a car B) the gas pedal on a car… the brakes on a car C) the steering wheel on a car… the gas pedal on a car D) the brakes on a car… the steering wheel on a car
________________ is one of the earliest antibiotics isolated from a fungus that lives in soil; it acts by inhibiting cell wall synthesis.
Fill in the blank(s) with the appropriate word(s).
James watson and Francis Crick used X ray to learn about DNA structure
a. true b. false