In order of their occurrence what are the steps in RNA interference?
A. Processing of RNA transcript by DGCR8, binding to RISC, transport to cytoplasm, processing by Dicer, binding to target mRNA
B. Processing by Dicer, processing of RNA transcript by DGCR8, transport to cytoplasm, binding to RISC, binding to target mRNA
C. Processing of RNA transcript by DGCR8, transport to cytoplasm, processing by Dicer, binding to RISC, binding to target mRNA
D. Processing of RNA transcript by DGCR8, processing by Dicer, transport to cytoplasm, binding to RISC, binding to target mRNA
C
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Chromatin condenses into chromosomes and the mitotic spindle begins to form during ____
a. interphase b. prophase c. metaphase d. anaphase e. telophase
Every year a new version of the flu vaccine is made using a mixture of strains. The strains are chosen based on surveillance and analysis by experts from the FDA, WHO, and CDC. For other diseases however, such as varicella (chickenpox), the same vaccine is used continually and repeated vaccinations are not necessary. What do you conclude is the important difference between the influenza virus and the varicella zoster virus with regards to vaccinations?
Different viruses have different properties that affect how the immune system responds to them, and consequently how vaccines must be developed. A. Influenza virus is transmitted through aerosol droplets in the air, while varicella can be transmitted via skin secretions. B. Varicella is attacked by the innate immune system, while influenza is attacked by the acquired immune system. C. Influenza virus has a much higher mutation rate than varicella, leading to frequent antigen changes in the coat proteins. D. Influenza envelope proteins are bound by IgM, while varicella envelope proteins are bound by IgG. 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 varicella zoster and influenza? 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? 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?
A part of the brain used in the transfer of information from one cerebral hemisphere to the other is the
(A) medulla oblongata (B) corpus callosum (C) cerebellum (D) hypothalamus (E) pituitary
Free radicals contain unpaired electrons in their outermost energy shell, so they react readily with other atoms or molecules to reach a more stable state. Which of the following could potentially be a free radical?
A) Magnesium (atomic number 12 ) B) Neon (atomic number 10 ) C) Helium (atomic number 2 ) D) Fluorine (atomic number 9 )