At the level of the organism, how is osmoregulation achieved?
A. by the movement of solutes across
membranes
B. by balancing the input and output of water
and electrolytes
C. by changing the overall permeability of
membranes
D. by bringing water in through the skin
E. None of these choices accurately describe
how osmoregulation is achieved at the level
of the organism.
B
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Which of the following does accurately describe the Lineweaver—Burk plot?
A) It is a double-reciprocal plot. B) The y intercept is equal to 1/Vmax. C) The x intercept is -1/Km. D) It is a linear plot. E) Its slope is the same as the Eadie—Hofstee plot.
Which of these is a heterotroph?
A. a phytoplanktonic diatom B. a moss plant C. an oak tree D. a corn plant E. a fish
The microbiome considers
A) DNA from microorganisms in the human body. B) human DNA in microorganisms. C) all DNA that is too small to be seen in a light microscope. D) genes that contribute to or control metabolism.
What does homeostasis allow an organism to do?
A) Organisms can obtain energy from food. B) Organisms can interact with their specific environment. C) Organisms can maintain a constant internal environment. D) Organisms can survive without water for long periods of time.