The human heart is composed of
A. an outer membranous sac called the pericardium.
B. cardiac muscle fibers.
C. muscle fibers called myocardium.
D. endocardium.
E. All of the choices are correct.
Answer: E
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The reason scientists hope to develop personalized stem cell therapies is that these therapies would avoid the problem of
A. tissue rejection. B. side effects of medication. C. the expense of organ transplantation. D. long wait times associated with organ donation. E. None of these choices are correct.
DNA fingerprints, such as those first used by Alec Jeffries, reveal variations in _____ between different individuals
a. blood type b. cancer-causing mutations c. transgenes d. the locations of restriction enzyme recognition sites e. STR alleles
After spraining your finger in a research paper-related mishap, you manage to submit your files with seconds to spare, so you decide to wind down by watching your favorite cartoon. In this episode, the main characters take up boxing, but they’re terrible at it; they spin their arms in wide circles centered around their shoulder joints. What term describes this pin wheeling motion?
a. hyperextension b. adduction c. circumduction d. dorsiflexion
Cell walls and cytokines of bacteria are examples of the evolution of resistance to the host immune response. Indicate whether the statement is true or false