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. group translocation
B. micronutrient regulator
C. passive diffusion
D. facilitated diffusion
Answer: A
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What is NOT a viable explanation for the lack of fossil records for more species?
a. Movement of Earth’s crust have destroyed fossils. b. Many species have not been preserved. c. Population density is too small to produce fossils that survive. d. Certain environments do not produce fossils as well as others. e. Body sizes are too large to become fossilized.
Which of the following is not a condition to estimate a model for causality?
A. The error terms are distributed normally. B. The sample is a random sample from the target population. C. The data generating process can be described by a determining function such as Yi = ?0 + ?1X1i + ...+ ?kXki + Ui. D. E[Ui] = E[UiX1i] = ... E[UiXki] = 0.
Which animal has a four-chambered stomach?
A. deer B. insect C. rabbit D. fish E. horse
Microfilaments:
A) help cells move or capture prey. B) act as "monorails" along which organelles move. C) form the structure of cilia and flagella. D) stabilize the position of the nucleus.