BIO 180 Practice Exam 1 Q & As (Verified
Answers) 2026
Which of the following is the best description of an alpha
particle? - Correct Answers ✅A helium nucleus.
An ancient human skull was found in the foothills of Rexburg.
In an attempt to determine when the person had lived the
skull was carbon dated. It was determined that the skull
contained 80% of the 14C that is normally found in living
tissue. Approximately how old is the skull. The T1/2 for 14C is
5730 years. - Correct Answers ✅1845 years
Lead-210 (Z=82) decays by alpha emission. What is the mass
number of the resulting atom. - Correct Answers ✅206
Carbon-14 ( 146C) is a radioactive element that emits beta
particles as it decays. What does Carbon-14 decay to? -
Correct Answers ✅Nitrogen-14
Which of the following is not one of the elements making up
96% of living matter? - Correct Answers ✅Na
Sodium has an atomic number of 11, How many electrons
does sodium have in its 3rd shell? - Correct Answers ✅1
Which of the following elements has a valence of two -
Correct Answers ✅Nitrogen, Carbon, Hydrogen
, BIO 180 Practice Exam 1 Q & As (Verified
Answers) 2026
Which of the following is the best definition of an electron
orbital? - Correct Answers ✅A three dimensional space
where electrons reside
Carbon has 6 electrons where are these electrons located? -
Correct Answers ✅c.Shell 1: 2 Shell 2: 4
What kind of bond would most likely form between Carbon
(C) and Iodine (I)? - Correct Answers ✅Non-polar Covalent
All chemical reactions at equilibrium have equal amounts of
products and reactants and therefore an equilibrium constant
(K) of 1. - Correct Answers ✅False
A carbon atom in a double bond with another carbon atom
would have the following shape: - Correct Answers ✅Flat
(Trigonal Planar)
Which element in ammonia possesses a partial positive
charge? - Correct Answers ✅Hydrogen
What kind of bond would most likely form between the
following elements: Potassium (K) and Bromine (Br). -
Correct Answers ✅Ionic
Answers) 2026
Which of the following is the best description of an alpha
particle? - Correct Answers ✅A helium nucleus.
An ancient human skull was found in the foothills of Rexburg.
In an attempt to determine when the person had lived the
skull was carbon dated. It was determined that the skull
contained 80% of the 14C that is normally found in living
tissue. Approximately how old is the skull. The T1/2 for 14C is
5730 years. - Correct Answers ✅1845 years
Lead-210 (Z=82) decays by alpha emission. What is the mass
number of the resulting atom. - Correct Answers ✅206
Carbon-14 ( 146C) is a radioactive element that emits beta
particles as it decays. What does Carbon-14 decay to? -
Correct Answers ✅Nitrogen-14
Which of the following is not one of the elements making up
96% of living matter? - Correct Answers ✅Na
Sodium has an atomic number of 11, How many electrons
does sodium have in its 3rd shell? - Correct Answers ✅1
Which of the following elements has a valence of two -
Correct Answers ✅Nitrogen, Carbon, Hydrogen
, BIO 180 Practice Exam 1 Q & As (Verified
Answers) 2026
Which of the following is the best definition of an electron
orbital? - Correct Answers ✅A three dimensional space
where electrons reside
Carbon has 6 electrons where are these electrons located? -
Correct Answers ✅c.Shell 1: 2 Shell 2: 4
What kind of bond would most likely form between Carbon
(C) and Iodine (I)? - Correct Answers ✅Non-polar Covalent
All chemical reactions at equilibrium have equal amounts of
products and reactants and therefore an equilibrium constant
(K) of 1. - Correct Answers ✅False
A carbon atom in a double bond with another carbon atom
would have the following shape: - Correct Answers ✅Flat
(Trigonal Planar)
Which element in ammonia possesses a partial positive
charge? - Correct Answers ✅Hydrogen
What kind of bond would most likely form between the
following elements: Potassium (K) and Bromine (Br). -
Correct Answers ✅Ionic
