Which of the following pairs is mismatched?
a. nucleolus-ribosomal RNA
b. nucleus-DNA replication
c. lysosome-protein synthesis
d. cell membrane-lipid bilayer
e. cytoskeleton-microtubules
c. lysosome-protein synthesis
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Answer the following statements true (T) or false (F)
1. A bacterial infection such as pneumonia is most likely caused by organisms derived from the animal kingdom. 2. All genetic mutations are harmful to an organism. 3. Vertical evolution, whereby living organisms evolve from a common ancestor ("tree of life"), is the only mechanism of evolution on Earth. 4. The effects of a genetic mutation are always limited to simply a change in DNA sequence with little consequence on the proteins expressed. 5. The proteome, rather than genome, is most directly responsible for the structure, function, and appearance of organisms.
A microaerophile
A. needs normal atmospheric levels of oxygen. B. requires a small amount of oxygen but won't grow at normal atmospheric levels of oxygen. C. grows best in an anaerobic jar. D. grows with or without oxygen.
The primary immune response is characterized by:
A. induction by one dose of antigen B. a long lag period C. Low levels of antibody produced D. waning rapidly E. all of the above
What is the age structure of a population?
A) the curve that results when the likelihood of dying is plotted as a function of age B) the curve that results when the likelihood of being alive is plotted as a function of age C) the number of individuals alive in different age-groups at one time point D) the difference in the age distribution of a population at two different points in time