Any agent that can potentially cause cognitive, behavioral or physical harm to the developing embryo or fetus is a(n) ______.
a. psychoactive drug
b. disease
c. teratogen
d. trophoblast
Answer: c. teratogen
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This protein or protein complex functions in the cell to stop cell division if the cell has experienced extensive DNA damage:
A. p53 B. condensin C. FtsZ D. APC/C
Mitochondrial disorders can be caused by mutations in all the following except
A. cytoplasmic DNA B. nuclear DNA C. mitochondrial DNA
Cultures taken from an impetigo lesion reveal bacteria that are Gram-positive cocci which are catalase- and coagulase-negative and cause beta-hemolysis when cultured on blood agar. The responsible species is
A) Staphylococcus aureus. B) staphylococci species other than Staphylococcus aureus. C) Streptococcus pyogenes. D) Pseudomonas aeruginosa. E) Clostridium perfringens.
A dance that recruits other bees into foraging close
by the hive is indicated by a. A. b. B. c. C. d. D. e. E.