PREVIOUS EXAM QUESTIONS BIOD 101
EXAM WITH CORRECT QUESTIONS
AND ANSWERS 2025
What is matter? - CORRECT-ANSWERS>>>>>>Anything that takes up
space, by having a volume, and has mass
The foundational building blocks of proteins are the organic compounds ____,
which are held together by ____ bonds - CORRECT-ANSWERS>>>>>>amino
acids; peptide
A _____ is the substance being dissolved into another substance, while the
___ is the substance into which another substance is being dissolved -
CORRECT-ANSWERS>>>>>>solute; solvent
Why are lipids insoluble in water? - CORRECT-ANSWERS>>>>>>They are
made mostly of non-polar hydrocarbon chains. As water is polar, it will only
dissolve other polar or ionically bonded substances. Lipids are non-polar, and
this is why they are insoluble in water but can be dissolved with nonpolar
solvents like alcohol
What type of ion carries a negative charge? - CORRECT-
ANSWERS>>>>>>anion
Which organelle of the cell contains the genetic content of the cell and
serves as the control center? - CORRECT-ANSWERS>>>>>>nucleus
What type of transport requires energy to move substances through the cell
membrane? Provide an example of this type of transport - CORRECT-
,ANSWERS>>>>>>Active transport; the sodium-potassium pump is an
active form of transport used to move sodium ions out of (and potassium
ions into) the cell
True or False: Biomacromolecules are said to be monomers because they
contain many polymers - CORRECT-ANSWERS>>>>>>False;
biomacromolecules are said to be polymers because they contain many
monomers
What type of cell junctions are mechanical structures that wrap arounf the
cell to prevent extracellular fluid from leaking? - CORRECT-
ANSWERS>>>>>>tight junctions
Nucleic acids are polymers built from monomers called ____ - CORRECT-
ANSWERS>>>>>>nucleotides
Which of the following statements is TRUE concerning eukaryotic cells?
- eukaryotic cells are typically smaller than prokaryotic cells
- eukaryotic cells do not contain internal membrane-bound organelles
- eukaryotic cells possess a nuclear membrane
- eukaryotic cells are less complex than prokaryotic cells - CORRECT-
ANSWERS>>>>>>eukaryotic cells possess a nuclear membrane
True or False: trace elements are required only in small quantities -
CORRECT-ANSWERS>>>>>>true
As part of the cytoskeleton, what role do microtubules serve? - CORRECT-
ANSWERS>>>>>>microtubules influence cell shape, form spindles for
chromosome separation during mitosis, can be arranged in specific
,geometric conformations that are used for cellular locomotion, and they
serve as "roads" for organelles to travel (by way of motor proteins)
The _____ group of a phoshpholipid is hydrophobic, whereas the ____ group is
hydrophilic - CORRECT-ANSWERS>>>>>>tail; head
Carrier mediated transport occurs when a ____ spans the membrane,
creating a tunnel like structure that allows specific molecules to pass through
via diffusion - CORRECT-ANSWERS>>>>>>channel protein
What occurs in a dehydration reaction? - CORRECT-ANSWERS>>>>>>a
water molecule is lost from the reactant side of the chemical equation
What type of passive transport relies on the tendency of solutes to move
from an area of high concentration to an area of low concentration? -
CORRECT-ANSWERS>>>>>>simple diffusion
What are the THREE defining characteristics of prokaryotic cells? - CORRECT-
ANSWERS>>>>>>1) small in size 2) lack organelles 3) non-enclosed
genetic material
True or False: The two major components embedded in a cell membrane are
nucleic acids and lipids - CORRECT-ANSWERS>>>>>>False: a membrane
has embedded within it two components: phoshpholipids and proteins
Which of the following bonds generally exists between two non-metals? -
CORRECT-ANSWERS>>>>>>covalent
True or False: the electrical potential of ions across the cell membrane is an
important element for nerve conduction, muscle contraction, mitochondrial
metabolism, and hormone secretion - CORRECT-ANSWERS>>>>>>true
, List THREE functions of proteins - CORRECT-ANSWERS>>>>>>1) can form
antibodies for immune system responses 2) act as carriers to transport
molecules across cell membrane
3) act as enzymes to regulate metabolic reactions
______ are simple sugar carbohydrates made up of a single monomer, and
_____ are complex sugars, such as glycogen - CORRECT-
ANSWERS>>>>>>monosaccharides; polysaccharides
Explain what happens to a cell when it is placed in an isotonic solution -
CORRECT-ANSWERS>>>>>>the cell will neither shrink nor swell because
the solute concentration inside the cell equals the solute concentration
outside the cell
which of the following nitrogenous bases can be found in RNA? - CORRECT-
ANSWERS>>>>>>cytosine, adenine, uracil, guanine
Individual living members of a population best describes an - CORRECT-
ANSWERS>>>>>>organism
each of the following are true regarding eukaryotes except:
- they are larger and generally more complex than prokaryotes
- they contain a membrane bound, true nucleus
-they have cell walls composed of peptidoglycan
- they can be divided into 4 main kingdons: fungi, protista, plantae, animalia
- CORRECT-ANSWERS>>>>>>they have cell walls composed of
peptidoglycan
EXAM WITH CORRECT QUESTIONS
AND ANSWERS 2025
What is matter? - CORRECT-ANSWERS>>>>>>Anything that takes up
space, by having a volume, and has mass
The foundational building blocks of proteins are the organic compounds ____,
which are held together by ____ bonds - CORRECT-ANSWERS>>>>>>amino
acids; peptide
A _____ is the substance being dissolved into another substance, while the
___ is the substance into which another substance is being dissolved -
CORRECT-ANSWERS>>>>>>solute; solvent
Why are lipids insoluble in water? - CORRECT-ANSWERS>>>>>>They are
made mostly of non-polar hydrocarbon chains. As water is polar, it will only
dissolve other polar or ionically bonded substances. Lipids are non-polar, and
this is why they are insoluble in water but can be dissolved with nonpolar
solvents like alcohol
What type of ion carries a negative charge? - CORRECT-
ANSWERS>>>>>>anion
Which organelle of the cell contains the genetic content of the cell and
serves as the control center? - CORRECT-ANSWERS>>>>>>nucleus
What type of transport requires energy to move substances through the cell
membrane? Provide an example of this type of transport - CORRECT-
,ANSWERS>>>>>>Active transport; the sodium-potassium pump is an
active form of transport used to move sodium ions out of (and potassium
ions into) the cell
True or False: Biomacromolecules are said to be monomers because they
contain many polymers - CORRECT-ANSWERS>>>>>>False;
biomacromolecules are said to be polymers because they contain many
monomers
What type of cell junctions are mechanical structures that wrap arounf the
cell to prevent extracellular fluid from leaking? - CORRECT-
ANSWERS>>>>>>tight junctions
Nucleic acids are polymers built from monomers called ____ - CORRECT-
ANSWERS>>>>>>nucleotides
Which of the following statements is TRUE concerning eukaryotic cells?
- eukaryotic cells are typically smaller than prokaryotic cells
- eukaryotic cells do not contain internal membrane-bound organelles
- eukaryotic cells possess a nuclear membrane
- eukaryotic cells are less complex than prokaryotic cells - CORRECT-
ANSWERS>>>>>>eukaryotic cells possess a nuclear membrane
True or False: trace elements are required only in small quantities -
CORRECT-ANSWERS>>>>>>true
As part of the cytoskeleton, what role do microtubules serve? - CORRECT-
ANSWERS>>>>>>microtubules influence cell shape, form spindles for
chromosome separation during mitosis, can be arranged in specific
,geometric conformations that are used for cellular locomotion, and they
serve as "roads" for organelles to travel (by way of motor proteins)
The _____ group of a phoshpholipid is hydrophobic, whereas the ____ group is
hydrophilic - CORRECT-ANSWERS>>>>>>tail; head
Carrier mediated transport occurs when a ____ spans the membrane,
creating a tunnel like structure that allows specific molecules to pass through
via diffusion - CORRECT-ANSWERS>>>>>>channel protein
What occurs in a dehydration reaction? - CORRECT-ANSWERS>>>>>>a
water molecule is lost from the reactant side of the chemical equation
What type of passive transport relies on the tendency of solutes to move
from an area of high concentration to an area of low concentration? -
CORRECT-ANSWERS>>>>>>simple diffusion
What are the THREE defining characteristics of prokaryotic cells? - CORRECT-
ANSWERS>>>>>>1) small in size 2) lack organelles 3) non-enclosed
genetic material
True or False: The two major components embedded in a cell membrane are
nucleic acids and lipids - CORRECT-ANSWERS>>>>>>False: a membrane
has embedded within it two components: phoshpholipids and proteins
Which of the following bonds generally exists between two non-metals? -
CORRECT-ANSWERS>>>>>>covalent
True or False: the electrical potential of ions across the cell membrane is an
important element for nerve conduction, muscle contraction, mitochondrial
metabolism, and hormone secretion - CORRECT-ANSWERS>>>>>>true
, List THREE functions of proteins - CORRECT-ANSWERS>>>>>>1) can form
antibodies for immune system responses 2) act as carriers to transport
molecules across cell membrane
3) act as enzymes to regulate metabolic reactions
______ are simple sugar carbohydrates made up of a single monomer, and
_____ are complex sugars, such as glycogen - CORRECT-
ANSWERS>>>>>>monosaccharides; polysaccharides
Explain what happens to a cell when it is placed in an isotonic solution -
CORRECT-ANSWERS>>>>>>the cell will neither shrink nor swell because
the solute concentration inside the cell equals the solute concentration
outside the cell
which of the following nitrogenous bases can be found in RNA? - CORRECT-
ANSWERS>>>>>>cytosine, adenine, uracil, guanine
Individual living members of a population best describes an - CORRECT-
ANSWERS>>>>>>organism
each of the following are true regarding eukaryotes except:
- they are larger and generally more complex than prokaryotes
- they contain a membrane bound, true nucleus
-they have cell walls composed of peptidoglycan
- they can be divided into 4 main kingdons: fungi, protista, plantae, animalia
- CORRECT-ANSWERS>>>>>>they have cell walls composed of
peptidoglycan
