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18 Cards in this Set
- Front
- Back
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The Formula H2O means a. an atom contains 2 hydrogen molecules and 1 oxygen molecule c. a molecule contains 2 hydrogen atoms and 1 oxygen atom |
C.
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A hydrophilic molecule dissolves in: A. lipid but not water B. water but not lipid C. neither lipid nor water |
B
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Osmosis is: A. The movement of water towards a lower solute concentration B. The movement of water towards a higher solute concentration C. water being forced through a filter by hydrostatic pressure |
B
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All organic compunds contain the element: A. Carbon B. Hydrogen C. oxygen |
A
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DNA and RNA are: A. nucleic acids B. lipids C. proteins |
A
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An element with the atomic number 6 contains 12 protons True or False |
False
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The attraction of the positive hydrogen end of a polar molecule to the negative nitrogen or oxygen end of another polar molecule is called a A. Covalent Bond B. ionic bond C. nonpolar bond D. hydrogen bond |
D
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Which term describes a solution that contains more hydroxide ions than hydrogen ions? A. basic B. neutral C. Acidic |
A
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Each whole number on a PH scale represents a ________ fold difference in hydrogen ion concentration A. 10 B. 100 C. 1000 D. 2 |
A
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Tiny droplets of fluid can enter and cross a cell membrane from outside in a process called: A. phagocytosis B. active transport C. passive transport D. Pinocytosis |
D |
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Pancreatic Cells release insulin using a. endocytosis b. exocytosis c. phagocytosis |
B
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Cells burn glucose in a process called oxidation True/False |
True
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In dehydration synthesis: a. polymers are broken into monomers b. monomers are joined into polymers c. water molecules become joined to monosaccharides |
B
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Enzymes: a. increase activation energy b. slow metabolic reactions c. are mostly nucleic acids d. are not consumed in reactions |
D |
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each enzyme acts only on a particular chemical called its: a. gene b. catalyst c. substrate |
c
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The part of an ATP molecule that holds energy used in metabolism is: a. ribose b. adenine c. phosphate bonds |
C |
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The organelle that houses the reactions of aerobic respiration is the: a. Golgi apparatus b. endoplasmic reticulum c. nucleolus d. mitochondria |
D |
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