The hair cells in the ________ detect the direction of gravity
A) middle ear B) corpuscle
C) utricle and saccule D) oval and round windows
C
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Which of the following is true of water
molecules when water becomes ice?
a. the water molecules jiggle more b. their structure becomes less rigid c. the water molecules pack less densely d. hydrogen bonds between water molecules readily break e. evaporation of water molecules happens more readily
Where can ribosomes be found inside of the cell?
What will be an ideal response?
Why did scientists originally believe that proteins, rather than DNA, were the molecules that directed protein synthesis?
A. Proteins were the same types of molecules as those that were being synthesized. B. Proteins were more likely to have catalytic properties for synthesis reactions. C. Proteins were the more complex molecules in which genetic information could be stored. D. At the time, more was known about the structure of proteins than that of DNA.
Kidney stones are primarily composed of which substances that settle out of urine?
A. Potassium salts B. Uric acid and calcium C. Urea and potassium D. Phosphates and amino acids E. Fatty acid salts