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Water, pH and Macromolecules

Water, pH and Macromolecules
Who discovered and described the blood groups (ABO) classification?

Otto Warburg
Karl Landsteiner
Theodor Kocher
Karl Hooper

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Water, pH and Macromolecules
Molecules in which the atoms are held together by __________ bonds have the strongest chemical linkages.

ionic
hydrogen
noncovalent
covalent

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Water, pH and Macromolecules
A biological polymer contains alanine, tyrosine, and lysine. Which of the following will be true about this molecule?

Strong base
DNA
Phospholipid
Protein

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Water, pH and Macromolecules
If protein is made exclusively from nonpolar amino acids, then it will this protein interact with water?

It will act as a buffer and stabilize the pH
be repelled by water
It will form a membrane in water
It will be attracted to water

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Water, pH and Macromolecules
A Bronsted acid becomes __________ upon losing a proton.

its conjugate acid
a hydronium ion
its conjugate base
highly reactive

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Water, pH and Macromolecules
A solution with pH = 5 is __________ than a solution with pH = 7.

2 times more basic
100 times more acidic
10 times more acidic
10 times more basic

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