Which of the following do not get infected by viruses?
A. Plants
B. Animals
C. Bacteria
D. Animals, plants and bacteria can all be infected by viruses.
Answer: D
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The normal human microbiota is considered part of the 1st line of defense because
A. microbiota cause an inflammatory response, eliminating pathogens. B. resident bacterial cells stimulate phagocytosis of pathogens. C. microbial antagonism keeps potential pathogens in check. D. pathogens and normal biota cannot exist in the same location.
In lactation, milk production is stimulated by _____, while milk release is stimulated by _________.
A. oxytocin, prolactin B. progesterone, oxytocin C. prolactin, oxytocin D. prostaglandin, oxytocin E. progesterone, prolactin
Which of the following best describes a "species"?
a. a group of individuals producing similar vestigial structures b. a group of individuals developed through selective breeding c. a group of populations with homologous structures d. a group of populations that evolved independently e. a group of similar fossils
If a cell containing 10 chromosomes divides by mitosis, how many chromosomes will be in each daughter cell?
a) 26 b) 5 c) 20 d) 10 e) 2