Diffusion tensor imaging (DTI) is a type of ____
a. MRI
b. PET scan
c. X-ray
d. sonogram
e. CT scan
ANSWER: a
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Answer the following statements true (T) or false (F)
1. The electronegativity of an atom is a measure of its ability to attract electrons to its outer shell from another atom. 2. Table salt forms from sodium and chloride via hydrogen bonding. 3. Molecules are generally rigid structures and rarely change shape. 4. The presence of salt helps prevent oceans from freezing.
After three replication cycles in PCR, there will be a total of three double-stranded DNA molecules.
Answer the following statement true (T) or false (F)
The net weight of all of the organisms living in an ecosystem is its
A. productivity. B. biomass. C. vital force. D. photosynthesis minus metabolism. E. combined output of metabolism and photosynthesis.
Cystic fibrosis is a genetic disease that results from a defective CFTR protein that alters ion flow through the cell membrane such that water does not cross the cell membrane. Gene therapy is being used to attempt to help cystic fibrosis patients. Which
of the following steps is not needed to develop a gene therapy treatment for cystic fibrosis? A) Clone the normal-functioning CFTR gene and make an RNA version of the gene. B) Make antibodies to the defective CFTR protein to enhance the patient's immune system. C) Remove cells from a patient and infect them with the recombinant virus. D) Insert the RNA version of the CFTR gene into a virus.