Compare and contrast cilia and flagella
What will be an ideal response?
Cilia are numerous in the individual and are very short. Flagella are less numerous and are very long. Both have a microtubule support structure. Both cilia and flagella cause movement of the organism; however, cilia are generally thought to move materials and not the individual.
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Which of the following is most similar to the Watson—Crick helix?
A) B-DNA B) C-DNA C) A-DNA D) mRNA E) Z-DNA
Which of the following are adaptations of fluid feeders that feed on the blood of other
animals?
a. piercing and sucking mouthparts b. production of anesthetic compounds c. production of anticoagulants d. all of these
Some research has indicated that increased exercise is linked to increased telomere length in renewable tissues, like
blood. Assuming that telomerase levels are not increased by exercise, what might explain the increase in telomere length?
a. DNA replication occurred more frequently in individuals who exercised. b. Cell division occurred more rapidly in individuals who exercised. c. Telomerase activity was higher in individuals who exercised. d. Telomerase activity was lower in individuals who exercised. e. Fewer DNA replication errors occurred in individuals who exercised.
The nucleus of the eukaryotic cell functions:
A. to store the cell's hereditary information B. to house the nucleolus C. as the command center for the cell D. All of the choices are correct.