You discover a new transport system used by a newly discovered bacterial species. The sugars that are transported using this system are phosphorylated as they enter the bacterial cell. You would describe this transport system as a(n) ________.
A. facillitated diffusion
B. passive diffusion
C. micronutrient regulator
D. group translocation
Answer: D
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Cytoplasmic localization refers to ________
a. the uneven distribution of cellular components within the cytoplasm b. the consumption of the cytoplasm during embryonic development c. the even distribution of cellular components within the cytoplasm d. the division of the cytoplasm e. the formation of additional cytoplasm
A probable sequence of the evolution of cells was
A. autotroph ® aerobic heterotroph ® anaerobic heterotroph. B. anaerobic heterotroph ® aerobic heterotroph ® autotroph. C. anaerobic heterotroph ® autotroph ® aerobic heterotroph. D. aerobic heterotroph ® autotroph ® anaerobic heterotroph.
Both a man and a woman are heterozygous for freckles. Freckles ( F) are dominant over no freckles ( f). What is the chance that their child will have freckles?
a) 100% b) 25% c) 50% d) 0% e) 75%
Which of the following is not a function of skeletal muscles?
A. movement of bones B. support C. protection of internal organs D. pumping of blood throughout the body E. maintenance of body temperature