1|Page
Rio Bio 156 Exam 1 2026 ACTUAL COMPREHENSIVE
REAL VERIFIED EXAM QUESTIONS AND CORRET
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+ / NEWEST EXAM!!!
As a tadpole transforms into an adult frog, there is very
little if any change in size, but there is a great deal in its
external appearance. This modification is an example of...
- Answer-Development
List the six kingdoms of life. - Answer-Bacteria
Archaea
Protists
Animalia
Fungi
Plantae
Distinguish between prokaryotic and eukaryotic cells. -
Answer-Prokaryotic cells: smaller, lack a nucleus, no
organelles
Eukaryotic cells: larger, have a nucleus, have organelles
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Outline the scientific method. - Answer-Making
observations
Asking questions
Forming a hypothesis
Making predictions
Testing the predictions
Which of the following substances are elements? -
Answer-Iron
Carbon
Oxygen
An element with the atomic number 6 would contain... -
Answer-6 protons
An atom has six protons and eight neutrons. Its atomic
number is... - Answer-6
An atom has an atomic mass of 23 and an atomic number
of 11. The number of neutrons in its nucleus is... - Answer-
12
,3|Page
The atomic number of an element is 16. The arrangement
of electrons through its energy levels is... - Answer-2-8-6
Which type of chemical bond results from electron
sharing? - Answer-Covalent
The formula H2O means... - Answer-An atom contains 2
hydrogen molecules and 1 oxygen molecule.
An atom that has gained or lost electrons is called an ion. -
Answer-True
The midpoint of the pH scale is... - Answer-pH 7
State four elements essential to life that make up 96% of
living matter. - Answer-Oxygen
Carbon
Hydrogen
Nitrogen
Describe the structure of an atom. - Answer-Indivisible,
uncuttable.
, 4|Page
Smallest unit of elements that can retain the properties of
an element.
Define and distinguish among atomic mass and atomic
number. - Answer-Atomic mass: number of protons
Atomic number: roughly equals to number of protons plus
neutrons
A polymer is... - Answer-Giant molecule
Which two phrases best describe a dehydration synthesis
reaction? - Answer-Loss of a water molecule, synthesis of
a polymer
A phospholipid differs structurally from a triglyceride in that
it has three phosphate groups attached to the glycerol
molecule rather than three fatty acid chains. - Answer-
False
Each is a type of carbohydrate except... - Answer-
Cholesterol
Rio Bio 156 Exam 1 2026 ACTUAL COMPREHENSIVE
REAL VERIFIED EXAM QUESTIONS AND CORRET
ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+ / NEWEST EXAM!!!
As a tadpole transforms into an adult frog, there is very
little if any change in size, but there is a great deal in its
external appearance. This modification is an example of...
- Answer-Development
List the six kingdoms of life. - Answer-Bacteria
Archaea
Protists
Animalia
Fungi
Plantae
Distinguish between prokaryotic and eukaryotic cells. -
Answer-Prokaryotic cells: smaller, lack a nucleus, no
organelles
Eukaryotic cells: larger, have a nucleus, have organelles
,2|Page
Outline the scientific method. - Answer-Making
observations
Asking questions
Forming a hypothesis
Making predictions
Testing the predictions
Which of the following substances are elements? -
Answer-Iron
Carbon
Oxygen
An element with the atomic number 6 would contain... -
Answer-6 protons
An atom has six protons and eight neutrons. Its atomic
number is... - Answer-6
An atom has an atomic mass of 23 and an atomic number
of 11. The number of neutrons in its nucleus is... - Answer-
12
,3|Page
The atomic number of an element is 16. The arrangement
of electrons through its energy levels is... - Answer-2-8-6
Which type of chemical bond results from electron
sharing? - Answer-Covalent
The formula H2O means... - Answer-An atom contains 2
hydrogen molecules and 1 oxygen molecule.
An atom that has gained or lost electrons is called an ion. -
Answer-True
The midpoint of the pH scale is... - Answer-pH 7
State four elements essential to life that make up 96% of
living matter. - Answer-Oxygen
Carbon
Hydrogen
Nitrogen
Describe the structure of an atom. - Answer-Indivisible,
uncuttable.
, 4|Page
Smallest unit of elements that can retain the properties of
an element.
Define and distinguish among atomic mass and atomic
number. - Answer-Atomic mass: number of protons
Atomic number: roughly equals to number of protons plus
neutrons
A polymer is... - Answer-Giant molecule
Which two phrases best describe a dehydration synthesis
reaction? - Answer-Loss of a water molecule, synthesis of
a polymer
A phospholipid differs structurally from a triglyceride in that
it has three phosphate groups attached to the glycerol
molecule rather than three fatty acid chains. - Answer-
False
Each is a type of carbohydrate except... - Answer-
Cholesterol
