Marine bony fish have body fluids that are ________ to seawater, so they continuously drink seawater and actively pump out ________.
A. hypotonic; ions
B. isotonic; ions
C. hypertonic; iron
D. isotonic; glucose
Answer: A
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In humans, the sex of a child is determined by the
A. number of autosomes in the sperm. B. sex chromosome in the egg. C. number of autosomes in the egg. D. number of X chromosomes in the egg. E. sex chromosome in the sperm.
Lysosomes are specialized ____
a. ribosomes b. vacuoles c. Golgi bodies d. vesicles e. plastids
What is the purpose of double-blind experiments?
A) to ensure that the hypothesis is scientifically testable B) to see if the experimental group responds differently than the control group C) to help the subjects in an experiment understand the treatment they are receiving D) to minimize the effects of human bias on the results
Which of the following does not contribute significantly to the mass of an atom?
A) electron B) neutron C) element D) proton E) isotope