Which of these is an incorrect comparison between flagella and cilia?
A. Flagella are longer structures than cilia.
B. Flagella have essentially the same internal structure of cytoskeleton proteins as cilia.
C. Flagella are used for propulsion, while cilia are used to attach cells to other cells or surfaces.
D. Flagella and cilia are both used for types of cellular movement.
E. Flagella are found in all three domains of organisms, while cilia are found only in Eukarya.
C. Flagella are used for propulsion, while cilia are used to attach cells to other cells or surfaces.
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Growth in ocean areas that are high nutrient and low chlorophyll (HNLC) is limited by the availability of ________.
A. iron B. manganese C. phosphorus D. nitrogen
How does the presence of allolactose affect the lactose operon? a. Allolactose binds to the repressor, altering its shape so it cannot bind to operators
b. Allolactose binds to the operators so the repressor cannot bind there. c. Allolactose binds to the promoter so RNA polymerase may not bind there. d. Allolactose has a homeodomain that binds to specific base sequences in the first gene, blocking transcription.
Actual exchange of gases in the lungs occurs in the
a. bronchi. b. alveoli. c. bronchioles. d. tracheas. e. glottis.
Which type of lung cancer is the most aggressive form?
a. beta cell carcinoma b. squamous cell carcinoma c. large-cell carcinoma d. adenocarcinoma e. small-cell carcinoma