What type of muscle cell has branching, striated cells, each containing a single nucleus?
a. cardiac muscle
b. rough muscle
c. skeletal muscle
d. smooth muscle
Answer: a. cardiac muscle
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Which of the following can be used as a vector for gene therapy?
A. Liposomes B. Parvoviruses C. Adenoviruses D. Retroviruses E. All of the answers are correct
Four of the five answers are correct ways to reduce the impact of plastic trash. Select the exception
a. Choose durable items over disposable ones. b. Recycle. c. Avoid buying plastic where alternatives exist. d. Dispose of waste properly. e. Use plastic shopping bags.
What type of RNA carries the information that specifies a protein?
A. transfer RNA B. ribosomal RNA C. messenger RNA D. double-stranded RNA E. complementary RNA
An organ must contain at least:
A. two different tissue types. B. connective tissue. C. all four of the tissue types. D. two different muscle types. E. two different cell types.