Pheromones are generally detected by the vomeronasal organ in most mammals, reptiles, and amphibians. (True)
A. true
B. false
A
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In Pasteur's experiment showing that living organisms arise from other living organisms, which one of the following statements most accurately describes Pasteur's hypothesis?
A. Straight-neck flasks allow for more contamination than swan-neck flasks. B. Sterilization of broth kills microbes. C. If microbes arise from non-living matter, they should appear spontaneously in sterile broth. D. Microbes should be capable of growing equally well in sterile broth contained in both straight-neck and swan-neck flasks. E. The first cells must have come from chemical reactions occurring in early Earth.
A molecular clock is
A. a clock that uses atoms for accurate time keeping. B. an estimate of the rate of accumulation of genetic divergences between two populations. C. a tool used to identify the rate of mutation, and is the same for all genes. D. a tool for studying evolution that has no real-world applications.
What produces the ATP required for the Calvin cycle?
a. the stroma b. the cytoplasm c. ATP synthase d. the thylakoid lumen
When Ca2
+ diffuses into the cytoplasm of muscle cells and initiates the crossbridge cycle, the animal is most likely stressed.
Indicate whether the statement is true or false.