If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a line of such plants?
A) Backtrack through her previous experiments to obtain another plant with the same traits.
B) Breed this plant with another plant with much weaker traits.
C) Clone the plant.
D) Force the plant to self-pollinate to obtain an identical one.
E) Add nitrogen to the soil of the offspring of this plant so the desired traits continue.
Answer: C
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Many types of cancer cells have been detected to secrete significant levels of lactate. Do you think these cells are likely undergoing beta-oxidation?
A. Yes, because beta-oxidation can generate intermediates that would lead to the production of lactate. B. No, because if lactate is being produced, the cell is not likely making use of the pathways needed to make use of the products of beta-oxidation. C. Yes, because lactate stimulates beta-oxidation. D. No, because lactate is consumed in beta-oxidation 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 lactate fermentation? How do products from this process indicate how cancer cells derive energy? What other information is related to the question? Choose Answer Do you have all necessary information to determine which products would affect cellular respiration? 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?
In the presence of abundant iron in the cell, the iron binds IRP. The complex then binds to the IREs and
A. an increase in ferritin mRNA translation and a decrease in transferrin receptor mRNA stability B. a decrease in transferrin receptor mRNA translation and an increase in ferritin mRNA stability. C. an increase in ferritin and transferrin receptor mRNA translation. D. an increase in ferritin and transferrin receptor gene transcription.
All of the following are located on the exterior
surface of a prokaryote EXCEPT a. flagellum b. pilus c. plasma membrane d. capsule e. none of these
For most of its approximately million year history, the human population has been in the ____ phase of population growth.
A. lag B. exponential growth C. deceleration D. stable equilibrium