The mode of action of penicillin is
A) inhibition of cell wall synthesis
B) disruption of cell membranes
C) inhibition of protein synthesis
D) inhibition of nucleic acid synthesis
Ans: A) inhibition of cell wall synthesis
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How does a fermenter generate proton motive force (PMF) to drive active transport?
A. Fermenters use an electron transport chain for this purpose. B. Fermenters can reverse the direction of the ATP synthase to generate PMF. C. Fermenters cannot generate proton motive force.
A birdhouse is nailed into a tree 6 feet up from the ground. If the tree grows about 2 feet taller each year, where will the birdhouse be 25 years later?
A. 50 feet B. 56 feet C. 26 feet D. 6 feet E. 4 feet Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about a tree grows? How does it relate to the question? Consider Possibilities · 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?
Homeotic genes contain a homeobox sequence that is highly conserved among very diverse species. The homeobox is the code for that domain of a protein that binds to DNA in a regulatory developmental process. Therefore, you would expect that _____
A) homeotic genes are selectively expressed as an organism develops B) homeoboxes cannot be expressed in nonhomeotic genes C) homeotic genes in apes and humans are very different D) all organisms must have homeotic genes
A cross between a black and a tan cat produces a tabby cat (black and tan fur together). What percent of kittens would have tan fur if a tabby cat is crossed with a black cat?
A.) 0% B.) 25% C.) 50% D.) 100%