The sum of all the different kinds of limiting factors is
A. biological amplification.
B. environmental resistance.
C. biotic potential.
D. symbiosis.
B. environmental resistance.
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The fungus Penicillium produces a compound that blocks peptidoglycan assembly. Why is a fungus trying to kill bacteria?
A. Fungi eat bacteria. B. Fungi and bacteria are both decomposers and compete for resources. C. The compound produced by the fungus is used for nitrogen fixation, the antibacterial properties are accidental. D. The fungal compound is produced in response to a bacterial invasion of the fungal hyphae. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about fungi? How does it relate to the question? · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
ABC-type ATPases that inhibit the effectiveness of antitumor drugs by transporting the drugs out of tumor cells are known as
A) multidrug resistance (MDR) transporters. B) Na+-drug antiporters. C) the cystic fibrosis transmembrane conductance regulator (CFTR). D) porins. E) None of the above; no such transporter has been identified in eukaryotes.
Which of the following is incorrectly paired?
a. autotroph?plants b. carnivore?snake c. herbivore?sheep d. ruminant?cow e. suspension feeders?mosquitoes
The following pertain to ribosomes during protein synthesis except
A. ribosomes participate only in translation. B. they contain codons within their rRNA molecules. C. ribosomes use their large subunit to supply enzymes for peptide bonding. D. ribosomes shift toward the 3' end of the mRNA strand from one codon to the next. E. ribosomes bind to the 5' end of mRNA by their small subunit.