Compare the composition, structure, and function of cilia and flagella
What will be an ideal response?
Microtubules serve as the working parts of two types of cell extensions called cilia (singular, cilium) and flagella (singular, flagellum). Cilia are numerous, short extensions on a cell that move with the back-and-forth motion of oars. A flagellum resembles a whip and moves in an undulating manner. Cilia and flagella differ in length, number per cell, and pattern of movement. Nevertheless, they have a similar arrangement of microtubules at their core, which consists of nine pairs of microtubules arranged in a ring with two microtubules at the center.
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The Ames test is useful as a rapid screening test to identify those compounds that
A. will respond to chemical agents. B. are mutagens. C. respond to the deletion of DNases. D. will protect an organism from cancer. E. will respond to chemical agents AND will protect an organism from cancer.
After processing of pre-mRNAs is complete, some regions are retained in finished mRNAs. What are these regions called?
a. exons b. snRNPs c. UTRs d. domains
Homeostasis
A) is the maintenance of a relatively constant internal state. B) results from hormone imbalance. C) occurs when the external environment changes to match the internal environment. D) is the way the internal environment influences the external environment.
What are the main differences in the formation of the egg and sperm in males and females?
What will be an ideal response?