CCBC BIO 110 FINAL COMPREHENSIVE
STUDY GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Bulk transport across the plasma membrane occurs by exocytosis and
endocytosis..
Answer: • Small molecules and water enter or leave the cell through the
lipid bilayer or via transport proteins.• Large molecules, such as
polysaccharides and proteins, cross the membrane in bulk via vesicles.•
Bulk transport requires energy
◍ Signal Reception:.
Answer: - Receptors are glycoproteins that bind with specific signaling
molecules.- Many hydrophilic molecular signals bind to receptors on the
surface of the target cell and do not actually enter the cell. Hydrophobic
molecules move through the plasma membrane and bind with intracellular
receptors.- A ligand binds to a specific receptor and triggers a biological
response. Only the signaling molecule that fits the shape of a specific
receptor can trigger a response in a cell.- The signals a cell responds to
depends on its receptors. Different cell types produce different receptors. A
cell may synthesize many different kinds of receptors.
◍ What is photorespiration?.
Answer: When the enzyme rubisco binds O₂ during the Calvin Cycle.
◍ Prokaryotic cells have:.
Answer: • No nucleus.• DNA in an unbound region called the nucleoid.• No
membrane-bound organelles.• Cytoplasm bound by the plasma membrane
◍ Enzyme-Linked (tyrosine kinase) Receptors (RTKs).
Answer: are membrane receptor enzymes that attach phosphates to amino
, acid tyrosine. A receptor tyrosine kinase can trigger multiple signal
transduction pathways at once. Abnormal functioning of RTKs is associated
with many types of cancers.
◍ What occurs during light-independent reactions of photosynthesis?.
Answer: Carbon dioxide is converted into sugars.
◍ Mitochondria.
Answer: are the sites of cellular respiration, a metabolic process that uses
oxygen to generate ATP.
◍ What is the function of tRNA during translation?.
Answer: Brings amino acids to the ribosomes.
◍ What determines the difference between amino acids?.
Answer: R or variable groups.
◍ What is the definition of mutation?.
Answer: A change in the DNA sequence.
◍ Where does glycolysis occur in a cell?.
Answer: Cytosol or cytoplasm.
◍ - During endocrine signaling, (Signal transmission).
Answer: messenger molecules (hormones) secreted by endocrine glands
reach their target cells through the bloodstream.
◍ The nucleus.
Answer: contains most of the cell's genes and is usually the most
conspicuous organelle
◍ The Golgi apparatus.
Answer: consists of flattened membranous sacs called cisternae.
◍ Hydrolytic enzymes and lysosomal membranes.
Answer: are made by rough ER and then transferred to the Golgi apparatus
for further processing.
◍ During which stage of meiosis do homologous pairs separate?.
, Answer: Anaphase I.
◍ - Most water-soluble signal molecules bind to specific sites on receptor
proteins that span the plasma membrane. There are three main types of
membrane receptors:.
Answer: •ion channel-linked,•G-protein linked (coupled),
and•enzyme-linked receptors
◍ There are three types of endocytosis.
Answer: • Phagocytosis ("cellular eating"): In phagocytosis a cell engulfs a
particle in a vacuole. The vacuole fuses with a lysosome to digest the
particle.• Pinocytosis ("cellular drinking"): In pinocytosis, molecules
dissolved in droplets are taken up when extracellular fluid is "gulped" into
tiny vesicles• Receptor-mediated endocytosis: In receptor-mediated
endocytosis, binding of ligands to receptors triggers vesicle formation. A
ligand is any molecule that binds specifically to a receptor site of another
molecule.
◍ Passive transport.
Answer: is diffusion of a substance across a membrane with no energy
investment.• Diffusion is the tendency for molecules to spread out evenly
into the available space. Although each molecule moves randomly, diffusion
of a population of molecules may be directional.• At dynamic equilibrium,
as many molecules cross the membrane in one direction as in the other.•
Substances diffuse down their concentration gradient, the region along
which the density of a chemical substance increases or decreases. No work
must be done to move substances down the concentration gradient.• The
diffusion of a substance across a biological membrane is passive transport
because no energy is expended by the cell to make it happen.
◍ Mitochondria and chloroplasts.
Answer: change energy from one form to another.
◍ Why is it advantageous for cells to be small?.
Answer: Higher surface-area-to-volume ratio for efficient transport.
STUDY GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Bulk transport across the plasma membrane occurs by exocytosis and
endocytosis..
Answer: • Small molecules and water enter or leave the cell through the
lipid bilayer or via transport proteins.• Large molecules, such as
polysaccharides and proteins, cross the membrane in bulk via vesicles.•
Bulk transport requires energy
◍ Signal Reception:.
Answer: - Receptors are glycoproteins that bind with specific signaling
molecules.- Many hydrophilic molecular signals bind to receptors on the
surface of the target cell and do not actually enter the cell. Hydrophobic
molecules move through the plasma membrane and bind with intracellular
receptors.- A ligand binds to a specific receptor and triggers a biological
response. Only the signaling molecule that fits the shape of a specific
receptor can trigger a response in a cell.- The signals a cell responds to
depends on its receptors. Different cell types produce different receptors. A
cell may synthesize many different kinds of receptors.
◍ What is photorespiration?.
Answer: When the enzyme rubisco binds O₂ during the Calvin Cycle.
◍ Prokaryotic cells have:.
Answer: • No nucleus.• DNA in an unbound region called the nucleoid.• No
membrane-bound organelles.• Cytoplasm bound by the plasma membrane
◍ Enzyme-Linked (tyrosine kinase) Receptors (RTKs).
Answer: are membrane receptor enzymes that attach phosphates to amino
, acid tyrosine. A receptor tyrosine kinase can trigger multiple signal
transduction pathways at once. Abnormal functioning of RTKs is associated
with many types of cancers.
◍ What occurs during light-independent reactions of photosynthesis?.
Answer: Carbon dioxide is converted into sugars.
◍ Mitochondria.
Answer: are the sites of cellular respiration, a metabolic process that uses
oxygen to generate ATP.
◍ What is the function of tRNA during translation?.
Answer: Brings amino acids to the ribosomes.
◍ What determines the difference between amino acids?.
Answer: R or variable groups.
◍ What is the definition of mutation?.
Answer: A change in the DNA sequence.
◍ Where does glycolysis occur in a cell?.
Answer: Cytosol or cytoplasm.
◍ - During endocrine signaling, (Signal transmission).
Answer: messenger molecules (hormones) secreted by endocrine glands
reach their target cells through the bloodstream.
◍ The nucleus.
Answer: contains most of the cell's genes and is usually the most
conspicuous organelle
◍ The Golgi apparatus.
Answer: consists of flattened membranous sacs called cisternae.
◍ Hydrolytic enzymes and lysosomal membranes.
Answer: are made by rough ER and then transferred to the Golgi apparatus
for further processing.
◍ During which stage of meiosis do homologous pairs separate?.
, Answer: Anaphase I.
◍ - Most water-soluble signal molecules bind to specific sites on receptor
proteins that span the plasma membrane. There are three main types of
membrane receptors:.
Answer: •ion channel-linked,•G-protein linked (coupled),
and•enzyme-linked receptors
◍ There are three types of endocytosis.
Answer: • Phagocytosis ("cellular eating"): In phagocytosis a cell engulfs a
particle in a vacuole. The vacuole fuses with a lysosome to digest the
particle.• Pinocytosis ("cellular drinking"): In pinocytosis, molecules
dissolved in droplets are taken up when extracellular fluid is "gulped" into
tiny vesicles• Receptor-mediated endocytosis: In receptor-mediated
endocytosis, binding of ligands to receptors triggers vesicle formation. A
ligand is any molecule that binds specifically to a receptor site of another
molecule.
◍ Passive transport.
Answer: is diffusion of a substance across a membrane with no energy
investment.• Diffusion is the tendency for molecules to spread out evenly
into the available space. Although each molecule moves randomly, diffusion
of a population of molecules may be directional.• At dynamic equilibrium,
as many molecules cross the membrane in one direction as in the other.•
Substances diffuse down their concentration gradient, the region along
which the density of a chemical substance increases or decreases. No work
must be done to move substances down the concentration gradient.• The
diffusion of a substance across a biological membrane is passive transport
because no energy is expended by the cell to make it happen.
◍ Mitochondria and chloroplasts.
Answer: change energy from one form to another.
◍ Why is it advantageous for cells to be small?.
Answer: Higher surface-area-to-volume ratio for efficient transport.
