The urinary bladder is protected from leaking by cell-to-cell junctions called
A) desmosomes. B) tight junctions. C) gap junctions. D) plasmodesmata.
B
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Osmoreceptors detect
a. chemical substances. b. pressure changes. c. vibrational changes. d. light wavelengths. e. changes in solute concentration.
Why is vaccination for rubella recommended?
A) It has a high mortality rate in school-age children. B) Death from secondary infections is common. C) There is a high incidence of congenital infections and birth defects. D) Health care workers have a high incidence of infection. E) It is no longer recommended; rubella has been eradicated.
The attempt of two organisms trying to utilize the same resource is called
A. parasitism. B. interference. C. synergy. D. competition.
Figure 29.12 C
Use the accompanying figure of a Capsella seed to answer the following question.
?
A cotyledon is indicated by the letter ____.
A. A B. B C. C D. D E. E