List and describe the three types of joints found in the human body.
What will be an ideal response?
Fibrous joints: these are immovable joints found between the cranial bones of the skull.
Cartilaginous joints: these are joints that are connected by hyaline or fibrous cartilage that tend to be slightly moveable.
Synovial joints: these are freely moveable joints.
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All northern elephant seals come from a very small genetic pool. This is because in the 1890s a large number of them were very quickly killed until their population size was reduced to only about 20 individuals. Though their population has since increased to over 30,000 individuals, all their genes have come from those 20 individuals. Which of the following population genetic concepts does this example represent?
a) genetic drift b) evolution c) the Hardy-Weinberg equilibrium d) the founder effect e) the bottleneck effect
A neutral atom of chlorine has an atomic number of 17, it has _____electrons in its 3rd shell.
a. 2 b. 17 c. 8 d. 7
Capsaicin is a compound in chili peppers that produces a burning sensation in mammalian tissues. In mammals, capsaicin binds to the TRPV1 transmembrane channel. Interestingly, the TRPV1 channel in birds does not respond to capsaicin. What implications could this have for chili pepper plants?
A. Chili pepper seeds cannot be dispersed. B. Mammals are likely responsible for the dispersal of chili pepper seeds. C. Birds are likely responsible for the dispersal of chili pepper seeds. D. Birds will avoid eating chili peppers.
A DNA (library/microarray/screen) may be used to study the complex, changing patterns of mRNA production in an organism.
Fill in the blank(s) with the appropriate word(s).