Identify two structural components of the cytoskeleton, and briefly describe their function(s).What will be an ideal response?
Microtubules of the cytoskeleton are involved in chromosome movement during division.
Microfilaments provide mechanical support for cellular structures.
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Competitive exclusion is based upon the idea that ____
a. one species will voluntarily allow the other to survive b. no two species can completely occupy the same niche c. the larger species will dominate the smaller d. competition is overrated as a factor in species survival e. two species can live together, if they share the same niche but only at alternate times
________ bonds are needed for complex shapes of large organic molecules.
A. Ionic B. Nondirectional C. Stationary D. Directional
Select all of the X-linked conditions from the choices.
a. Fragile X syndrome b. Down syndrome c. muscular dystrophy d. color-blindness
To understand past and predict future changes in populations, ecologists use three important factors. These are:
A. the population's birth rate. B. expected longevity of individuals in the population. C. the proportion of individuals in the population able to reproduce. D. the population's birth rate and the expected longevity of individuals in the population. E. the population's birth rate, the expected longevity of individuals in the population, and the proportion of individuals in the population able to reproduce.