BIOS 1404 Test - A. Carbs B. Phospholipids C. Triglycerides D. F...

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BIOS 1404 Test

• Which of the following molecules is a major component of biological mem- branes?
• Carbs
• Phospholipids
• Triglycerides

D. Fatty Acids:

Answer B. Phospholipids

• Atoms with the same number of valence electrons are found in the same

of the periodic table of elements.

• Rows
• Isotopic range
• Columns

D. Sides:

Answer C. Columns

• Which functional group is hydrophobic?
• phosphate
• hydroxyl
• carboxyl

D. methyl:

Answer D. Methyl

• Atomic number refers to the number of in the nuclear of an atom.
• Protons
• Positrons
• Electrons

D. Neutrons:

Answer A. Protons

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• Polar covalent bonds form when
• Electrons are transferred between atoms
• Water molecules attract each other
• There is an unequal sharing of electrons between atoms

D. Anions and cations are attracted to each other:

Answer C. There is an unequal sharing of electrons between atoms

• Which of the following is NOT true regarding isomers?
• They have the same number of atoms
• Isomers may have different shapes
• One isomer can subsitute for another in a chemical reaction

D. Isomers may differ in how atoms are arranged across double bonds:

Answer C. One isomer can substitute for another in a chemical reaction

• An acid added to water will
• Increase the hydrogen ion concentration
• Increase the hydroxide ion concentration
• Decrease the hydroxide ion concentration

D. Decrease the hydrogen ion concentration:

Answer A. Increase the hydrogen ion con- centration

• Which of the following is a polysaccharide found in animals for storing energy?
• Cellulose
• Amylose
• Glucose

D. Glycogen:

Answer D. Glycogen

• What kind of reaction is required to break down a polymer?
• Hydrolysis
• Anabolic
• Spontaneous
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