Ocean productivity is the amount of food produced by marine organisms and the number of organisms this food supports
Indicate whether the statement is true or false
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The inheritance pattern where two or more genes do not assort independently because they are close together on the same chromosome is called
A. Mendelian inheritance. B. epistasis. C. genomic imprinting. D. linkage. E. dominance.
You've just isolated a new bacterium in pure culture, and you culture it on a general purpose medium where its cells have a coccobacillus morphology. When you examine the cells after culturing on a variety of differential media, you find that in some cases, the cells appear as coccobacillus, but in others, they can be filamentous, cocci, or club-shaped. The best explanation for this observation is that
A. your culture has become contaminated. B. the media were incubated at an incorrect temperature. C. the microscope is out of adjustment. D. the differential media are contaminated. E. the bacterium is pleomorphic.
Which of these stages of cell respiration can occur without the others?
A) the electron transport chain B) the citric acid cycle C) lactic acid fermentation D) glycolysis
Which of the following best describes the nature of the sieve element cells of mature, functioning phloem?
A) living, thick-walled tubes B) dead, thick-walled tubes C) dead cells that retain some organelles and some maintenance functions D) living cells that have lost their nucleus