What is a major benefit of CRISRPR-Cas9 over older gene therapy tools?
A) It delivers a gene to a specific part of the genome.
B) It can be used in vivo.
C) It is the only tool that can delivery genes safely in humans.
D) It can also be used to deliver proteins.
A) It delivers a gene to a specific part of the genome.
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A college student spent the week hiking on the Appalachian Trail and then spends Friday night walking around New York City's Time Square. What was her ecological footprint during the week compared to Friday night?
A. Her ecological footprint was small in the natural environment and high in the manmade environment. B. Her ecological footprint was large in the natural environment (because she was the only human) and small in the man-made environment (because there are lots of humans). C. Her ecological footprint was the same in both environments because ecological footprints are only calculated over long (at least a year) periods of time for entire human populations. D. More information is needed about what resources the student used in both environments to determine her ecological footprint.
Which two assays should be used together for detecting antibodies toward B. dermatitidis, H. capsulatum, and C. immitis?
a. Enzyme-linked immunosorbent assay (ELISA) and direct fluorescent antibody (DFA) b. Complement fixation and immunodiffu-sion c. Indirect fluorescent antibody (IFA) and Western blot d. Enzyme immunoassay (EIA) and latex agglutination
Magnetoreceptors ____
a. are well characterized and understood b. are known to rely on the mineral magnetite c. have been theorized to help many types of animals navigate huge distances in their annual migrations d. have been studied only in homing pigeons e. have been studied primarily in moths
Began in 2009, the first human trials using embryonic stem cells were used:
A) in patients with Crohn's disease B) in patients with debilitating spinal cord injuries C) to treat teratomas D) to regenerate cardiac muscle cells in patients who had suffered heart attacks E) to treat leukemias and lymphomas