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