A researcher is studying a parasitic bacterium that produces toxins that can harm its host
Thus, the researcher is studying a(n)
a. heterotrophic eukaryote.
b. autotrophic eukaryote.
c. heterotrophic prokaryote.
d. autotrophic prokaryote.
C
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It has been hypothesized that fungi and plants have a mutualistic relationship because plants make sugars available for the fungi's use. What is the best evidence in support of this hypothesis?
A) Fungi survive better when they are associated with plants. B) Radioactively labeled sugars produced by plants eventually show up in the fungi with which they are associated. C) Fungi associated with plants have the ability to undergo photosynthesis and produce their own sugars, while those not associated with plants do not produce their own sugars. D) Radioactive labeling experiments show that plants pass crucial raw materials to the fungus for manufacturing sugars.
The use of recombinant DNA technology to produce commercial products is known as ____________________. Fill in the blank(s) with the appropriate word(s)
Cryptococcus neoformans is a gram-negative cocci with a thick capsule
Indicate whether the statement is true or false
A seed contains an embryo mutant for gibberellic acid (GA) receptors. What phenotype would you expect to result in the seedling?
A. No mutant phenotype until the plant is older. B. Malformed cotyledons due to defects in development. C. Yellow instead of green due to chloroplast failure. D. Poor growth due to unusable nutrient reserves.