2024
BIO 121 Exam 1
, BIO 121 Exam 1 (60 Questions with Answers)
1. A(n) ________ has charge but negligible mass, whereas a(n) ________ has mass
but no charge.
A) Proton; neutron
B) Neutron; proton
C) Neutron; electron
D) Electron; neutron
Answer: D
2. A neutral atom has two, eight, eight electrons in its first, second, and third energy
levels. This information ________.
A) does not tell us about the atomic number of the element
B) does not tell us about the chemical properties of the element
C) does not tell us about the atomic mass of the element
D) does not tell us about the size of the element
Answer: C
, 3. Which one of the atoms shown would be most likely to form a cation with a charge of
+1? A)
B)
C)
D)
Answer: A
4. Which four elements make up approximately 96% of living matter?
A. Carbon, Oxygen, Nitrogen, and phosphate
B Carbon, sodium, chlorine, magnesium
BIO 121 Exam 1
, BIO 121 Exam 1 (60 Questions with Answers)
1. A(n) ________ has charge but negligible mass, whereas a(n) ________ has mass
but no charge.
A) Proton; neutron
B) Neutron; proton
C) Neutron; electron
D) Electron; neutron
Answer: D
2. A neutral atom has two, eight, eight electrons in its first, second, and third energy
levels. This information ________.
A) does not tell us about the atomic number of the element
B) does not tell us about the chemical properties of the element
C) does not tell us about the atomic mass of the element
D) does not tell us about the size of the element
Answer: C
, 3. Which one of the atoms shown would be most likely to form a cation with a charge of
+1? A)
B)
C)
D)
Answer: A
4. Which four elements make up approximately 96% of living matter?
A. Carbon, Oxygen, Nitrogen, and phosphate
B Carbon, sodium, chlorine, magnesium
