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Biology: Chapter 2
Test Description: Part 2
Instructions: Answer all questions to get your test result.
1) Atomic mass is equal to the number of neutrons + electrons.
A
True
B
False
2) These help prevent sharp, sudden changes in pH within your body.
A
Lipids
B
Catalysts
C
Enzymes
D
Buffers
3) The elements in the Boron family have _____ valence electrons.
A
3
B
4
C
5
D
2
4) Electrons and protons are attracted to each other because they have opposite charges.
A
True
B
False
5) Elements are arranged into their chemical families (columns on periodic table) by
A
atomic mass
B
symbol
C
pH
D
valence electrons
6) The isotope Chlorine 38 has how many neutrons?
A
21
B
11
C
18
D
19
7) Mixture whose components are evenly distributed.
A
Solution
B
Compound
C
Solvent
D
Suspension
8) Subatomic particles found within the nucleus of an atom.
A
protons + neutrons
B
protons + electrons
C
protons only
D
electrons + neutrons
9) Control the rate of reactions, regulate cell processes, and transport substances into and out of a cell.
A
Carbohydrates
B
Proteins
C
Nucleic Acids
D
Lipids
10) Include sugars and starches.
A
Proteins
B
Lipids
C
Nucleic Acids
D
Carbohydrates
*select an answer for all questions
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