RNA interference is used to:
a. interfere with specific transcription factors.
b. knock out the expression of a specific gene.
c. prevent the duplication of DNA.
d. cause a mutation in a specific gene.
e. stimulate apoptosis.
b
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An in vitro preparation of the small intestine is studied. The scientist removes all sodium from the apical (lumen) side. How will this affect the uptake of glucose and fructose? What if all of the sodium is removed from the basolateral (interstitial fluid) side? How will this affect the uptake of glucose and fructose?
What will be an ideal response?
Which of the following is responsible for nearly 100,000 human deaths worldwide every year?
A) Entamoeba histolytica B) Amoeba proteus C) plasmodial slime molds D) Dictyostelium discoideum
Segmentation is the subdivision of the body into segments or metameres. True segmentation is found in which of the following phyla?
A. Annelida, Mollusca, Arthropoda B. Echinodermata, Platyhelminthes, Cnidaria C. Mollusca, Chordata, Annelida D. Arthropoda, Chordata, Porifera E. Arthropoda, Annelida, Chordata
In India, golden jackals that have been expelled from their pack have been known to attach themselves to a particular tiger, trailing it at a safe distance in order to feed on the big cat's kills. What type of relationship exists between the jackal and the tiger?
A. mutualism B. predation C. parasitism D. competition E. commensalism 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 symbiotic relationships? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection 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?