______ is a process of nuclear division which reduces the number of chromosomes per cell from 2 sets to 1 set.
A. Mitosis
B. Meiosis
C. Binary fission
D. Syngamy
B. Meiosis
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Answer the question using the accompanying figure. The function of the structure labeled "2" is ____
a. food intake b. digestion c. waste elimination d. water discharge e. asexual reproduction
What was the long-term effect of the introduction of myxoma virus to control rabbits in Australia?
a. The rabbits were all killed. b. Most rabbits became immune to the virus. c. The virus killed off some of the rabbit population but also infected kangaroos and wallabies. d. The virus became less virulent and the rabbits gained some immunity. e. The virus had no effect.
When a signaling molecule binds to a G protein linked receptor, the ligand-receptor complex associates with GDP
protein and causes GDP to be replaced by GTP. __________________ Indicate whether the statement is true or false.
An organism that cannot tolerate any oxygen gas in its environment is a(n)
A. obligate anaerobe. B. facultative anaerobe. C. obligate aerobe. D. microaerophile. E. aerobe.