How many semicircular canals are in the inner ear of the right ear?
A) One B) Two C) Three D) Four
C
You might also like to view...
For heart muscles to beat in a coordinated rhythm ions must move from one cell to the next through ____.
A. gap junctions B. hemidesmosomes C. focal adhesions D. adherens junctions E. desmosomes
You inoculate a bacterium into three tubes of nutrient broth medium containing added salt: 0.5% NaCl, 5% NaCl, and 15% NaCl. After incubation, you notice significant turbidity in the 15% NaCl medium and modest turbidity in the 5% NaCl medium. There is no growth in the third tube. This organism would be termed ________.
A. halophilic B. barophilic C. haloduric D. osmophobic
The total of all the resources, both biotic and abiotic, that a species exploits for its survival, growth, and reproduction is its
A. competitive zone. B. habitat. C. food web. D. niche. E. biosphere.
Which of the following is a common reason for hybrid infertility?
a. They express mechanical incompatibility. b. They are found to be ecologically isolated. c. A common reason for hybrid infertility is the failure of chromosomes to pair properly during meiosis. d. They fail to reach sexual maturity.