Biology: Chapter 2: Question Preview (ID: 7102)

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Atomic mass is equal to the number of neutrons + electrons.
a) True
b) False

These help prevent sharp, sudden changes in pH within your body.
a) Enzymes
b) Catalysts
c) Buffers
d) Lipids

The elements in the Boron family have _____ valence electrons.
a) 2
b) 3
c) 4
d) 5

Electrons and protons are attracted to each other because they have opposite charges.
a) True
b) False

Elements are arranged into their chemical families (columns on periodic table) by
a) symbol
b) atomic mass
c) valence electrons
d) pH

The isotope Chlorine 38 has how many neutrons?
a) 21
b) 11
c) 18
d) 19

Mixture whose components are evenly distributed.
a) Suspension
b) Solution
c) Compound
d) Solvent

Subatomic particles found within the nucleus of an atom.
a) protons + electrons
b) protons + neutrons
c) electrons + neutrons
d) protons only

Control the rate of reactions, regulate cell processes, and transport substances into and out of a cell.
a) Proteins
b) Carbohydrates
c) Nucleic Acids
d) Lipids

Include sugars and starches.
a) Lipids
b) Carbohydrates
c) Proteins
d) Nucleic Acids

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