Introduction to Biology Proctor Exam
2025/2026 Exam Questions and Correct
Answers | New Update
What are the smallest units of life? - 🧠ANSWER ✔✔cells
What list is a correct order of biological organization? - 🧠ANSWER
✔✔population, community, ecosystem, biosphere
A modification that makes organisms more suited to their environment is
called what? - 🧠ANSWER ✔✔adaptation
The life domain whose members live in very harsh environments, such as
salt lakes and hot springs, is what? - 🧠ANSWER ✔✔archaea
During a scientific experiment, what is the control group? - 🧠ANSWER
✔✔identical to the experimental group in all areas except the variable being
tested
,The __________ is a subatomic particle that carries a positive electrical
charge. - 🧠ANSWER ✔✔proton
When an atom has two or more electron shells, the outer shell will be most
stable if it contains eight electrons, what is this concept called? -
🧠ANSWER ✔✔octet rule
A ___________ is formed when two oxygen atoms join together. -
🧠ANSWER ✔✔molecule
What bond is the type of atomic bond in which atoms share electrons to
produce a completed outer shell? - 🧠ANSWER ✔✔covalent
What kind of bond does the polarity of water molecules cause them to be
attracted to one another? - 🧠ANSWER ✔✔hydrogen
As the number of hydrogen ions in a solution increases, the pH of the
solution does what? - 🧠ANSWER ✔✔decreases
During winter only the upper surface of a lake freezes, which allows for life
to persist below the surface...which of water's unique properties is
responsible for this phenomenon? - 🧠ANSWER ✔✔lower density as ice
,What is the most abundant element by weight in the human body? -
🧠ANSWER ✔✔oxygen
What is the polysaccharide structural carbohydrate most commonly used
by living things? - 🧠ANSWER ✔✔cellulose
Which functional group is associated with fatty acids? - 🧠ANSWER
✔✔carboxyl
The hard body parts of insects and crabs are composed of a
polysaccharide is known as what? - 🧠ANSWER ✔✔chitin
Cell membranes are composed mainly of which type of lipids? - 🧠ANSWER
✔✔phospholipids
Which proteins are made of polypeptide chains folded into rounded
compact shapes? - 🧠ANSWER ✔✔globular
When joined by a dehydration reaction, the covalent bond between the
carboxyl groups of two amino acids is called a _________ bond. -
🧠ANSWER ✔✔peptide
What is the sugar in RNA called? - 🧠ANSWER ✔✔ribose
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Where does the synthesis of proteins occur within the cells? - 🧠ANSWER
✔✔ribosomes
What is the main function of the mitochondria? - 🧠ANSWER ✔✔producing
atp
What keeps the cytoplasm of eukaryotic cells separate from the DNA? -
🧠ANSWER ✔✔nuclear envelope
What are the organelles that use solar energy to make carbohydrates? -
🧠ANSWER ✔✔chloroplasts
What is the powerhouse of the cell? - 🧠ANSWER ✔✔mitochondria
The cell-to-cell junctions that allow cells to communicate are called what
kind of junctions? - 🧠ANSWER ✔✔gap
What kind of reaction does one release energy and the second uses
energy? - 🧠ANSWER ✔✔coupled
Phagocytosis refers to a type of what? - 🧠ANSWER ✔✔endocytosis
2025/2026 Exam Questions and Correct
Answers | New Update
What are the smallest units of life? - 🧠ANSWER ✔✔cells
What list is a correct order of biological organization? - 🧠ANSWER
✔✔population, community, ecosystem, biosphere
A modification that makes organisms more suited to their environment is
called what? - 🧠ANSWER ✔✔adaptation
The life domain whose members live in very harsh environments, such as
salt lakes and hot springs, is what? - 🧠ANSWER ✔✔archaea
During a scientific experiment, what is the control group? - 🧠ANSWER
✔✔identical to the experimental group in all areas except the variable being
tested
,The __________ is a subatomic particle that carries a positive electrical
charge. - 🧠ANSWER ✔✔proton
When an atom has two or more electron shells, the outer shell will be most
stable if it contains eight electrons, what is this concept called? -
🧠ANSWER ✔✔octet rule
A ___________ is formed when two oxygen atoms join together. -
🧠ANSWER ✔✔molecule
What bond is the type of atomic bond in which atoms share electrons to
produce a completed outer shell? - 🧠ANSWER ✔✔covalent
What kind of bond does the polarity of water molecules cause them to be
attracted to one another? - 🧠ANSWER ✔✔hydrogen
As the number of hydrogen ions in a solution increases, the pH of the
solution does what? - 🧠ANSWER ✔✔decreases
During winter only the upper surface of a lake freezes, which allows for life
to persist below the surface...which of water's unique properties is
responsible for this phenomenon? - 🧠ANSWER ✔✔lower density as ice
,What is the most abundant element by weight in the human body? -
🧠ANSWER ✔✔oxygen
What is the polysaccharide structural carbohydrate most commonly used
by living things? - 🧠ANSWER ✔✔cellulose
Which functional group is associated with fatty acids? - 🧠ANSWER
✔✔carboxyl
The hard body parts of insects and crabs are composed of a
polysaccharide is known as what? - 🧠ANSWER ✔✔chitin
Cell membranes are composed mainly of which type of lipids? - 🧠ANSWER
✔✔phospholipids
Which proteins are made of polypeptide chains folded into rounded
compact shapes? - 🧠ANSWER ✔✔globular
When joined by a dehydration reaction, the covalent bond between the
carboxyl groups of two amino acids is called a _________ bond. -
🧠ANSWER ✔✔peptide
What is the sugar in RNA called? - 🧠ANSWER ✔✔ribose
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Where does the synthesis of proteins occur within the cells? - 🧠ANSWER
✔✔ribosomes
What is the main function of the mitochondria? - 🧠ANSWER ✔✔producing
atp
What keeps the cytoplasm of eukaryotic cells separate from the DNA? -
🧠ANSWER ✔✔nuclear envelope
What are the organelles that use solar energy to make carbohydrates? -
🧠ANSWER ✔✔chloroplasts
What is the powerhouse of the cell? - 🧠ANSWER ✔✔mitochondria
The cell-to-cell junctions that allow cells to communicate are called what
kind of junctions? - 🧠ANSWER ✔✔gap
What kind of reaction does one release energy and the second uses
energy? - 🧠ANSWER ✔✔coupled
Phagocytosis refers to a type of what? - 🧠ANSWER ✔✔endocytosis
