Which of the following is not a function of the cytoskeleton?
A) cell movement
B) cell division
C) moving of organelles
D) positioning of enzymes
E) passive transport
E) passive transport
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The combined function of the malleus, incus, and stapes is to ____
a. convert the mechanical vibration of the tympanic membrane into a pressure wave in the cochlear duct b. amplify the vibrations of the ear drum c. equalize the pressure on both sides of the tympanic membrane d. convert the oval window's vibrations into vibrations of the tympanic membrane e. dampen the vibrations of the tympanic membrane
What is the primary advantage of four-chambered hearts possessed by mammals over the hearts of reptiles and amphibians?
a. Larger hearts allow mammals to warm their blood more efficiently, which expands the habitat range available to them. b. An extra ventricle allows the heart to continue functioning in case any other chamber of the heart fails. c. Fully separated ventricles prevent partial deoxygenation of blood in the heart, allowing more oxygen to reach remote tissues. d. Larger hearts accommodate nucleated red blood cells unique to mammals, which are larger and contain more hemoglobin
Mendel’s theory of independent assortment states
that a. one allele is always dominant to another. b. hereditary units from the male and female parents are blended in the offspring. c. the two hereditary units that influence a certain trait segregate during gamete formation. d. each hereditary unit is inherited separately from other hereditary units. e. all of these are true.
The scientist who proposed that populations would outgrow its resources was ____
a. Malthus b. Crick c. Watson d. Darwin e. Smith