The use of CRISPR-cas has revolutionized the gene therapy field. One of the first uses of CRISPR-cas to edit genes in vivo was done at MIT. What disease did they cure?
A) HIV B) B-thalassemia C) type 1 tyrosinemia D) RDEB
Answer: C
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In the reaction: C4H6O4 + FAD ®C4H4O4 + FADH2, what type of reaction took place to remove the protons from C4H6O4?
A. Decarboxylation B. Reduction C. Dehydrogenation D. 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 redox reactions and electrons? What other information is related to the question? Choose Answer Do you have all necessary information to what type of reaction is taking place? 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 microbiologist is working with two genera of bacteria, A and B, to determine if cells are competent. Strains are grown under optimal conditions, and DNA fragments that carry the gene for green fluorescent protein is added to each culture at 20-minute intervals. Samples from each treatment are plated to nutrient agar and incubated, after which the plates are examined under an ultraviolet lamp. The microbiologist observes that all plates of bacteria B contain colonies that are fluorescent, while for bacteria A only the plates from stationary phase demonstrate fluorescent colonies. What can be concluded from these results?
A. Competence in bacteria A is constitutively expressed. B. Competence in bacteria B is dependent on the phase of growth. C. Both bacteria A and bacteria B cells are competent. D. Neither bacteria A nor bacteria B cells are competent.
The ring structure of glucose indicates that it is a(n)
A. monosaccharide. B. fatty acid. C. disaccharide. D. amino acid. E. nucleotide.
The number of births per female of age x is referred to as the
A) crude birthrate. B) age-specific birthrate. C) gross reproductive rate. D) net reproductive rate.