The difference in carrying capacity between the two species when cultured separately is closest to which of the following values?
(A) 0 individuals per 5.0 mL
(B) 60 individuals per 5.0 mL
(C) 150 individuals per 5.0 mL
(D) 350 individuals per 5.0 mL
Ans: (D) 350 individuals per 5.0 mL
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You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E. coli cells on light 14N medium for many generations and then transfer them to heavy 15N medium and allow them to grow for 2 additional generations (2 rounds of DNA replication). If the conservative model of DNA replication was correct, what is the expected distribution of DNA in the density gradient after two rounds of replication?
A. One band of intermediate density. B. One band of light density. C. One band of heavy density. D. One band of light density and one band of heavy density. E. One band of light density and one band of intermediate density. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about the Meselson-Stahl experiment? 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?
All fungi
a. are saprobes. b. digest food extracellularly. c. are parasites. d. digest food intracellularly. e. can ingest food particles
The salt gradient created by the kidney tubules ____
a. occurs only in the proximal tubules b. inhibits the reabsorption of water c. draws water out of the ascending arm of the loop of Henle d. occurs only within the kidney cortex e. drives the reabsorption of other solutes and water
In the British Columbia forest industry, there has been a history of cutting large areas (clear cutting) for timber, then replanting these areas with lodgepole pine and hybrid white spruce. Based on your understanding of "climax communities", explain the potential impact of these practices on forest biodiversity in BC
What will be an ideal response?