BIOD 101 Module 5 Exam – Essential Biology I w/Lab (Portage
Learning) (2026) Actual Questions with Verified Answers | Take &
Pass the Exam
Questions 1–50+
1. What is matter made up of?
A) Cells
B) Elements
C) Molecules
D) Compounds
Answer B: Elements
Rationale: Matter is composed of elements, which are substances that cannot be broken down into simpler
substances by chemical means.
2. What is an essential element?
A) An element found only in living organisms
B) An element that is required for human life, and is present in large abundances
C) An element that is rare in nature
D) An element that is not required for life
Answer B: An element that is required for human life, and is present in large abundances
Rationale: Essential elements are necessary for human survival and are found in relatively large quantities
in the body.
3. What is a trace element?
A) An element found in large quantities
B) An element that is required, but only in small quantities
C) An element that is not essential
D) An element found only in plants
Answer B: An element that is required, but only in small quantities
, Rationale: Trace elements are essential for life but are needed in very small amounts.
4. What type of chemical bond results from the attraction between oppositely charged ions?
A) Covalent bond
B) Hydrogen bond
C) Ionic bond
D) Van der Waals interaction
Answer C: Ionic bond
Rationale: Ionic bonds form when electrons are transferred from one atom to another, creating oppositely
charged ions that attract.
5. What type of chemical bond involves sharing a pair of electrons between atoms?
A) Ionic bond
B) Covalent bond
C) Hydrogen bond
D) Van der Waals interaction
Answer B: Covalent bond
Rationale: Covalent bonds form when atoms share electrons to achieve stable electron configurations.
6. What is a hydrogen bond?
A) A bond formed by electron transfer
B) A bond formed by electron sharing
C) A weak attraction between a hydrogen atom and another atom
D) A bond between two hydrogen atoms
Answer C: A weak attraction between a hydrogen atom and another atom
Rationale: Hydrogen bonds are weak electrostatic attractions between a hydrogen atom bonded to an
electronegative atom and another electronegative atom.
7. What is the charge of a cation?
A) Negative
B) Positive
C) Neutral
Learning) (2026) Actual Questions with Verified Answers | Take &
Pass the Exam
Questions 1–50+
1. What is matter made up of?
A) Cells
B) Elements
C) Molecules
D) Compounds
Answer B: Elements
Rationale: Matter is composed of elements, which are substances that cannot be broken down into simpler
substances by chemical means.
2. What is an essential element?
A) An element found only in living organisms
B) An element that is required for human life, and is present in large abundances
C) An element that is rare in nature
D) An element that is not required for life
Answer B: An element that is required for human life, and is present in large abundances
Rationale: Essential elements are necessary for human survival and are found in relatively large quantities
in the body.
3. What is a trace element?
A) An element found in large quantities
B) An element that is required, but only in small quantities
C) An element that is not essential
D) An element found only in plants
Answer B: An element that is required, but only in small quantities
, Rationale: Trace elements are essential for life but are needed in very small amounts.
4. What type of chemical bond results from the attraction between oppositely charged ions?
A) Covalent bond
B) Hydrogen bond
C) Ionic bond
D) Van der Waals interaction
Answer C: Ionic bond
Rationale: Ionic bonds form when electrons are transferred from one atom to another, creating oppositely
charged ions that attract.
5. What type of chemical bond involves sharing a pair of electrons between atoms?
A) Ionic bond
B) Covalent bond
C) Hydrogen bond
D) Van der Waals interaction
Answer B: Covalent bond
Rationale: Covalent bonds form when atoms share electrons to achieve stable electron configurations.
6. What is a hydrogen bond?
A) A bond formed by electron transfer
B) A bond formed by electron sharing
C) A weak attraction between a hydrogen atom and another atom
D) A bond between two hydrogen atoms
Answer C: A weak attraction between a hydrogen atom and another atom
Rationale: Hydrogen bonds are weak electrostatic attractions between a hydrogen atom bonded to an
electronegative atom and another electronegative atom.
7. What is the charge of a cation?
A) Negative
B) Positive
C) Neutral
