BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Multiple Choice Questions
1. Chemistry deals with
A. the composition and changes of substances that make up living as well as non-
living matter.
B. the composition of organisms only.
C. the composition of non-living matter only.
D. energy sources.
E. none of the above.
Difficulty Level: Remember/Understand
Learning Outcome: 02.01
Topic: Chemistry
2. Biochemistry is the study of
A. the origin of life.
B. chemical reactions in organisms.
C. how organisms relate to their environment.
D. how drugs affect the body.
E. energy transfer in non-living matter.
3. Chemistry is important to the study of physiology because
A. we eat chemicals.
B. body functions reflect cellular functions that reflect chemical changes.
C. drugs are chemicals.
D. chemical reactions enable our bodies to extract energy from nutrients.
E. all of the above.
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-1
A+
, BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Difficulty Level: Evaluate/Create
Learning Outcome: 02.01
Topic: Chemistry
4. Which of the following substances is an element?
A. Iron
B. Water
C. Salt
D. Glucose
E. Fat
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
Topic: Chemistry
5. Which of the following substances account for more than 95% of the human body?
A. Carbon, hydrogen, oxygen, nitrogen
B. Calcium, hydrogen, oxygen, nitrogen
C. Carbon, phosphorus, oxygen, hydrogen
D. Calcium, phosphorus, hydrogen, nitrogen
E. Carbon, calcium, nitrogen, hydrogen
Difficulty Level: Remember/Understand
Learning Outcome: 02.02
Topic: Chemistry
6. The atoms of two types of elements are likely to have
A. the same size and same weight.
B. the same size but different weights.
C. different sizes but the same weight.
D. different sizes and different weights.
E. different colors.
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-2
A+
, BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Difficulty Level: Evaluate/Create
Learning Outcome: 02.02
Topic: Chemistry
7. Which of the following is a form of ionizing radiation?
A. Cosmic radiation
B. Gamma radiation
C. Cosmic radiation and gamma radiation
D. Neither cosmic nor gamma radiation
E. None of the above.
Difficulty Level: Evaluate/Create
Learning Outcome: 02.02
Topic: Chemistry
8. The atomic weight of an element whose atoms contain 8 protons, 8 electrons, and 8
neutrons is
A. 8.
B. 16.
C. 24.
D. 32.
E. 64.
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
Topic: Chemistry
9. The atoms of the isotopes of a particular element vary in the number of
A. electrons.
B. protons.
C. neutrons.
D. nuclei.
E. molecules.
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-3
A+
, BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Difficulty Level: Remember/Understand
Learning Outcome: 02.02
Topic: Chemistry
10. The first electron shell of an atom can hold a maximum of
A. 1 electron.
B. 2 electrons.
C. 4 electrons.
D. 8 electrons.
E. 16 electrons.
Difficulty Level: Remember/Understand
Learning Outcome: 02.02
Topic: Chemistry
11. An atom that has 3 electrons in its second shell and a filled first shell will
A. lose 3 electrons from its second shell.
B. lose all of the electrons from its first shell.
C. lose all of the electrons from its first and second shells.
D. gain 2 electrons in its second shell.
E. gain 5 electrons in its second shell.
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
Topic: Chemistry
12. The formula H2O means
A. an atom contains two hydrogen molecules and one oxygen molecule.
B. an atom contains one hydrogen molecule and two oxygen molecules.
C. a molecule contains two hydrogen atoms and one oxygen atom.
D. a molecule contains one hydrogen atom and two oxygen atoms.
E. a molecule contains two hydrogen atoms and two oxygen atoms.
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-4
A+
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Multiple Choice Questions
1. Chemistry deals with
A. the composition and changes of substances that make up living as well as non-
living matter.
B. the composition of organisms only.
C. the composition of non-living matter only.
D. energy sources.
E. none of the above.
Difficulty Level: Remember/Understand
Learning Outcome: 02.01
Topic: Chemistry
2. Biochemistry is the study of
A. the origin of life.
B. chemical reactions in organisms.
C. how organisms relate to their environment.
D. how drugs affect the body.
E. energy transfer in non-living matter.
3. Chemistry is important to the study of physiology because
A. we eat chemicals.
B. body functions reflect cellular functions that reflect chemical changes.
C. drugs are chemicals.
D. chemical reactions enable our bodies to extract energy from nutrients.
E. all of the above.
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-1
A+
, BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Difficulty Level: Evaluate/Create
Learning Outcome: 02.01
Topic: Chemistry
4. Which of the following substances is an element?
A. Iron
B. Water
C. Salt
D. Glucose
E. Fat
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
Topic: Chemistry
5. Which of the following substances account for more than 95% of the human body?
A. Carbon, hydrogen, oxygen, nitrogen
B. Calcium, hydrogen, oxygen, nitrogen
C. Carbon, phosphorus, oxygen, hydrogen
D. Calcium, phosphorus, hydrogen, nitrogen
E. Carbon, calcium, nitrogen, hydrogen
Difficulty Level: Remember/Understand
Learning Outcome: 02.02
Topic: Chemistry
6. The atoms of two types of elements are likely to have
A. the same size and same weight.
B. the same size but different weights.
C. different sizes but the same weight.
D. different sizes and different weights.
E. different colors.
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-2
A+
, BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Difficulty Level: Evaluate/Create
Learning Outcome: 02.02
Topic: Chemistry
7. Which of the following is a form of ionizing radiation?
A. Cosmic radiation
B. Gamma radiation
C. Cosmic radiation and gamma radiation
D. Neither cosmic nor gamma radiation
E. None of the above.
Difficulty Level: Evaluate/Create
Learning Outcome: 02.02
Topic: Chemistry
8. The atomic weight of an element whose atoms contain 8 protons, 8 electrons, and 8
neutrons is
A. 8.
B. 16.
C. 24.
D. 32.
E. 64.
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
Topic: Chemistry
9. The atoms of the isotopes of a particular element vary in the number of
A. electrons.
B. protons.
C. neutrons.
D. nuclei.
E. molecules.
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-3
A+
, BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED A+
Difficulty Level: Remember/Understand
Learning Outcome: 02.02
Topic: Chemistry
10. The first electron shell of an atom can hold a maximum of
A. 1 electron.
B. 2 electrons.
C. 4 electrons.
D. 8 electrons.
E. 16 electrons.
Difficulty Level: Remember/Understand
Learning Outcome: 02.02
Topic: Chemistry
11. An atom that has 3 electrons in its second shell and a filled first shell will
A. lose 3 electrons from its second shell.
B. lose all of the electrons from its first shell.
C. lose all of the electrons from its first and second shells.
D. gain 2 electrons in its second shell.
E. gain 5 electrons in its second shell.
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
Topic: Chemistry
12. The formula H2O means
A. an atom contains two hydrogen molecules and one oxygen molecule.
B. an atom contains one hydrogen molecule and two oxygen molecules.
C. a molecule contains two hydrogen atoms and one oxygen atom.
D. a molecule contains one hydrogen atom and two oxygen atoms.
E. a molecule contains two hydrogen atoms and two oxygen atoms.
Difficulty Level: Apply/Analyze
Learning Outcome: 02.02
BIO 234 CHAPTER 02-CHEMICAL BASIS OF LIFE
EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GRADED2-4
A+
