The enzymatic activity of a telomerase is best described as a
A) polymerase.
B) ligase.
C) topoisomerase.
D) reverse transcriptase.
E) exonuclease.
D
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Which of the following statements is correct with respect to flagella and cilia?
A) Flagella display an oarlike pattern of beating. B) Cilia generate a force parallel to the cell surface. C) There are usually fewer cilia than flagella. D) Cilia are generally longer than flagella. E) Cilia often have a helical pattern of movement.
A collection of fibrous intracellular attachment proteins is called a(n)
A) annulus. B) connexon. C) plaque. D) tonofilament. E) both choices C and D
Sometimes after you have been exercising very hard your muscles ache due to the build up of lactic acid. Lactid acid has build up in your muscles because
A. Glucose is being broken down in the absence of oxygen B. Your muscles are burning fat for energy C. Glucose is being broken down in the presence of oxygen D. Your heart is pumping very fast and delivering more oxygen to your muscles than they can handle
The cytoskeletal structure(s) that are composed of actin and regulate cell shape, cell movement and muscle contraction include
_____ microfilaments. _____ intermediate filaments. _____ microtubules. _____ microtubules and intermediate filaments. _____ microfilaments and microtubules.