DNA and RNA contain many of the same nitrogen-containing bases.
Which base is only found in RNA?
A. uracil
B. guanine
C. adenine
D. cytosine
Which of these is not a component of lipids?
A. iron
B. hydrogen
C. oxygen
D. carbon
Simple carbohydrates composed of a single ring are also called ____.
A. polysaccharides
B. hydroxyl groups
C. disaccharides
D. monosaccharides
Which of these is a water-soluble vitamin?
A. vitamin E
B. vitamin D
C. vitamin C
D. vitamin K
A catalyst increases which of these in a chemical reaction?
A. activation energy
B. energetic state
C. rate
D. heat
The vertical columns of the periodic table are called ____.
A. periods
B. groups
C. rows
D. elements
Bleaches, disinfectants, and salts often contain elements from which nonmetal group?
A. noble gases
B. actinides
C. halogens
D. hydrogen
Which is not a property of metals?
A. thermal conduction
B. low density
C. high melting point
D. malleability
A particle with a negative or positive charge is referred to as ____.
A. a neutron
B. an isotope
C. a proton
D. an ion
The strongest bond between liquid water molecules is called ____.
A. an ionic bond
B. a hydrogen bond
C. a metallic bond
D. an oxygen bond
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