The study of hantaviruses requires biosafety level (BSL) 4 precautions
Indicate whether the statement is true or false.
Answer: TRUE
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Small segments of DNA that move from one part of the genome to another part are called
A. retroelements. B. transposons. C. transposase. D. translation. E. transpositions.
The centromere
A. is a region of DNA where sister chromatids associate. B. is a group of proteins that attach to the kinetochore. C. is only present when chromosomes are highly compacted. D. is a group of proteins that attach to the mitotic spindle. E. is not present on the chromosomes of the daughter cells until anaphase.
Which of the following tissue types is specialized to conduct electrical signals?
A. Nervous B. Muscle C. Epithelial D. Connective E. Both nervous and epithelial tissue are correct.
The time it takes for half of a radioisotope’s atoms to
decay a. cannot be calculated. b. is used to construct the geologic time scale. c. is its half-life. d. is the same for uranium 238 and carbon 14. e. is all of these.