Bacterial transposons often carry genes for which feature?
a. formation of flagella
b. formation of antibiotic resistance
c. formation of the sex pilus
d. formation of a capsule
Ans: b. formation of antibiotic resistance
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Logistic population growth describes growth without limitation
Indicate whether the statement is true or false.
Scientists are documenting the level of radiation in ____ forests along the western coasts of North America because
they tend to take up and concentrate radioactive material, making it easier to detect.
a. aspen b. alder c. Douglas fir d. cedar e. kelp
Most allergy medicines contain antihistamines that block the actions of histamine. These drugs reduce cold symptoms by directly
A. stimulating components of the immune system through the release of cytokines. B. stimulating the production of specific antibodies. C. blocking or reducing the inflammation response in mucous membranes. D. recruiting macrophages to the nasal epithelium. E. lysing virus-infected cells and preventing further propagation of the pathogen.
Hyphae of a basidiomycete’s primary mycelium consist of ____ cells
a. prokaryotic b. dikaryotic c. coenocytic d. homothallic e. monokaryotic