Gregor Mendel's work was different from that of other researchers working on inheritance in his day because he alone
A. was a religious man.
B. actually counted the numbers and types of offspring.
C. worked with pea plants.
D. knew how to grow plants.
Answer: B
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Our sense of balance depends most directly on
A. the vestibular system. B. the auditory system. C. the visual system. D. mechanoreceptors in our hands and feet. E. stretch receptors in our skeletal muscles.
Which of the following is a way that governments can promote economic growth in a region?
A) invest in infrastructure B) provide tax breaks that reduce the cost of labor C) provide subsidies for private investment D) invest in infrastructure, provide tax breaks that reduce the cost of labor, and provide subsidies for private investment E) provide tax breaks that reduce the cost of labor and invest in infrastructure
Which of the following types of cells would a flu virus most likely target as the means of entry into the body?
A. epithelial cells lining the respiratory system B. epithelial cells on the skin's surface C. red blood cells that are exposed through breaks in the skin D. osteoclasts within bone cells
Amino acids are attached to their tRNA molecules by which of the following?
a. hydrogen bonds b. aminoacyl-tRNA synthetases c. RNA ligase d. peptide bonds