IB BIOLOGY CERTIFICATION EVALUATION
TEST PAPER 2026 QUESTIONS AND
SOLUTIONS GRADED A+
●● What are the levels of biological organization from simple to most
complex?.
Answer: Molecules, cell, tissue, organ, organism, population,
community, ecosystem, biosphere
●● What are the 4 most common types of biological molecules?.
Answer: Proteins, nucleic acids, carbohydrates, and lipids
●● Organelle.
Answer: any of a number of organized or specialized structures in a
living cell
●● Cell.
Answer: The smallest structure and functional unit of an organism.
●● Tissue.
Answer: The material of specialized cells and their products that make a
wall of cells and their products
,●● Organ.
Answer: a part of an organism that is self-contained and serves a
function
●● Organism.
Answer: an individual animal, plant, or single-celled life form
●● What are the similarities and differences of a population and an
ecosystem?.
Answer: a population and ecosystem both include organisms, however a
population is one type of species while an ecosystem is both biotic and
abiotic things.
●● What is the definition of emergent properties?.
Answer: the feature that can't be directly from the features of its simpler
parts eg. the taste of salt w/ the combination of Na+Cl
●● What are the 4 shared characteristics of cells?.
Answer: DNA, cytoplasm, ribosome, and plasma membranes
●● What is the definition of unicellular organisms?.
Answer: an organism that consists only of 1 cell eg.
bacteria/microorganisms
,●● What is the definition of multicellular organisms?.
Answer: an organism that consists of multiple cells eg. human
●● What are the similarities and differences between prokaryotic and.
Answer: eukaryotic cells? Prokaryotic cells have no nuclei, unlike
Eukaryotic cells. Both are enclosed by membranes and have DNA.
Prokaryotic cells have no independent organelles, except for the
organelle of ribosome
●● How do the cells in multicellular organisms become specialized?.
Answer: By controlling what DNA is expressed in one cell, because all
of the cells in an organism have the same DNA, but only express some.
This might include how tight the bindings of the protein are, and if
protein is made what the microRNAs do
●● What is sexual reproduction?.
Answer: the production of a new living organism by combining genetics
of 2 different sexes/fusion of 2 gametes
●● What is asexual reproduction?.
Answer: the reproduction of offspring without the fusion of gametes.
●● How do Growth and Development differ?.
, Answer: Growth is the process of Development, which is getting
bigger/stronger/smarter
●● When consumers die, what gets nutrients and energy from the dead?.
Answer: The saprotrophs and detritivores
●● What is the definition of homeostasis and an example?.
Answer: The ability or tendency of an organism or cell to maintain
internal equilibrium by adjusting its physical processes. eg. body
temperature in mammals
●● What is the definition of metabolism?.
Answer: The chemical processes in living organisms in order to maintain
life. eg. the mammal's body metabolism can change the need and
absorption of energy, depending on environment
●● How does "response to environment" differ from "adaptation to
environment?".
Answer: Response involves the behavior that results from the
environment, while adaptation is how structures or functions of an
organism change in order to better survive in the environment.
●● What is the definition of adapt?.
Answer: to adjust to the environment
TEST PAPER 2026 QUESTIONS AND
SOLUTIONS GRADED A+
●● What are the levels of biological organization from simple to most
complex?.
Answer: Molecules, cell, tissue, organ, organism, population,
community, ecosystem, biosphere
●● What are the 4 most common types of biological molecules?.
Answer: Proteins, nucleic acids, carbohydrates, and lipids
●● Organelle.
Answer: any of a number of organized or specialized structures in a
living cell
●● Cell.
Answer: The smallest structure and functional unit of an organism.
●● Tissue.
Answer: The material of specialized cells and their products that make a
wall of cells and their products
,●● Organ.
Answer: a part of an organism that is self-contained and serves a
function
●● Organism.
Answer: an individual animal, plant, or single-celled life form
●● What are the similarities and differences of a population and an
ecosystem?.
Answer: a population and ecosystem both include organisms, however a
population is one type of species while an ecosystem is both biotic and
abiotic things.
●● What is the definition of emergent properties?.
Answer: the feature that can't be directly from the features of its simpler
parts eg. the taste of salt w/ the combination of Na+Cl
●● What are the 4 shared characteristics of cells?.
Answer: DNA, cytoplasm, ribosome, and plasma membranes
●● What is the definition of unicellular organisms?.
Answer: an organism that consists only of 1 cell eg.
bacteria/microorganisms
,●● What is the definition of multicellular organisms?.
Answer: an organism that consists of multiple cells eg. human
●● What are the similarities and differences between prokaryotic and.
Answer: eukaryotic cells? Prokaryotic cells have no nuclei, unlike
Eukaryotic cells. Both are enclosed by membranes and have DNA.
Prokaryotic cells have no independent organelles, except for the
organelle of ribosome
●● How do the cells in multicellular organisms become specialized?.
Answer: By controlling what DNA is expressed in one cell, because all
of the cells in an organism have the same DNA, but only express some.
This might include how tight the bindings of the protein are, and if
protein is made what the microRNAs do
●● What is sexual reproduction?.
Answer: the production of a new living organism by combining genetics
of 2 different sexes/fusion of 2 gametes
●● What is asexual reproduction?.
Answer: the reproduction of offspring without the fusion of gametes.
●● How do Growth and Development differ?.
, Answer: Growth is the process of Development, which is getting
bigger/stronger/smarter
●● When consumers die, what gets nutrients and energy from the dead?.
Answer: The saprotrophs and detritivores
●● What is the definition of homeostasis and an example?.
Answer: The ability or tendency of an organism or cell to maintain
internal equilibrium by adjusting its physical processes. eg. body
temperature in mammals
●● What is the definition of metabolism?.
Answer: The chemical processes in living organisms in order to maintain
life. eg. the mammal's body metabolism can change the need and
absorption of energy, depending on environment
●● How does "response to environment" differ from "adaptation to
environment?".
Answer: Response involves the behavior that results from the
environment, while adaptation is how structures or functions of an
organism change in order to better survive in the environment.
●● What is the definition of adapt?.
Answer: to adjust to the environment
