IB Biology HL Test Questions with Verified Answers Graded A+
What are the characteristics common to all forms of
life? - ANSWER -reproduction, carbon,
responds to surroundings, Growth and Development, What are the 4 shared characteristics of cells? -
cellular organization, and energy ANSWER -DNA, cytoplasm, ribosome, and
plasma membranes
What are the levels of biological organization from
simple to most complex? - ANSWER - What is the definition of unicellular organisms? -
Molecules, cell, tissue, organ, organism, population, ANSWER -an organism that consists only of 1
community, ecosystem, biosphere cell eg. bacteria/microorganisms
What are the 4 most common types of biological What is the definition of multicellular organisms? -
molecules? - ANSWER -Proteins, nucleic acids, ANSWER -an organism that consists of multiple
carbohydrates, and lipids cells eg. human
Organelle - ANSWER -any of a number of What are the similarities and differences between
organized or specialized structures in a living cell prokaryotic and - ANSWER -eukaryotic cells?
Prokaryotic cells have no nuclei, unlike Eukaryotic
cells. Both are enclosed by membranes and have
Cell - ANSWER -The smallest structure and DNA. Prokaryotic cells have no independent
functional unit of an organism. organelles, except for the organelle of ribosome
Tissue - ANSWER -The material of specialized How do the cells in multicellular organisms become
cells and their products that make a wall of cells and specialized? - ANSWER -By controlling what
their products 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
Organ - ANSWER -a part of an organism that is protein are, and if protein is made what the
self-contained and serves a function microRNAs do
Organism - ANSWER -an individual animal, What is sexual reproduction? - ANSWER -the
plant, or single-celled life form production of a new living organism by combining
genetics of 2 different sexes/fusion of 2 gametes
What are the similarities and differences of a
population and an ecosystem? - ANSWER -a What is asexual reproduction? - ANSWER -the
population and ecosystem both include organisms, reproduction of offspring without the fusion of
however a population is one type of species while an gametes.
ecosystem is both biotic and abiotic things.
How do Growth and Development differ? -
What is the definition of emergent properties? - ANSWER -Growth is the process of
ANSWER -the feature that can't be directly Development, which is getting
from the features of its simpler parts eg. the taste of bigger/stronger/smarter
salt w/ the combination of Na+Cl
,IB Biology HL Test Questions with Verified Answers Graded A+
occupying that habitat
When consumers die, what gets nutrients and energy
from the dead? - ANSWER -The saprotrophs
and detritivores What is the definition of biosphere? -
ANSWER -it is the part of the earth's crust,
waters, and atmosphere that support life
What is the definition of homeostasis and an
example? - ANSWER -The ability or tendency
of an organism or cell to maintain internal equilibrium What is the definition of catabolism? -
by adjusting its physical processes. eg. body ANSWER -the metabolism breaking down
temperature in mammals complex into simple substances with the release of
energy
What is the definition of metabolism? -
ANSWER -The chemical processes in living What is the definition of cell? - ANSWER -the
organisms in order to maintain life. eg. the mammal's smallest functioning structure of living matter
body metabolism can change the need and
absorption of energy, depending on environment
What is the definition of cell membrane? -
ANSWER -The semipermeable membrane
How does "response to environment" differ from enclosing the cytoplasm of a cell
"adaptation to environment?" - ANSWER -
Response involves the behavior that results from the
environment, while adaptation is how structures or What is the definition of community? -
functions of an organism change in order to better ANSWER -a set of species found in the same
survive in the environment. place at the same time
What is the definition of adapt? - ANSWER -to What is the definition of cytoplasm? -
adjust to the environment ANSWER -The cell substance between cell
membrane and nucleus
What is the definition of anabolism? -
ANSWER -constructive metabolism that What is the definition of detritivore? -
synthesizes more complex substances from simple ANSWER -an organism that uses organic waste
substances as a food source
What is the definition of an atom? - ANSWER - What is the definition of differentiation? -
The smallest unit of matter ANSWER -process by which cells or tissues
change/specialize in development
What is the definition of autotroph? -
ANSWER -any organism capable of self What is an electron? - ANSWER -an elementary
nourishment to get energy particle having negative charge and exists outside of
the nucleus (electron cloud)
What is the definition of Biome? - ANSWER -a
large naturally occuring community of fauna and flora What is evolution? - ANSWER -process how
, IB Biology HL Test Questions with Verified Answers Graded A+
different living organisms developed and diversified and the cell has a limit before it is too large to
metabolize
What is growth? - ANSWER -increasing in
amount or complexity What does the amount of volume dictate in a cell? -
ANSWER -the number of reactions increase in
a cell the larger the volume
What is a heterotroph? - ANSWER -organism
deriving nutrients from complex organic substances
What are some adaptations by cells to maximize their
SA:V ratio? - ANSWER -Creating many more
What is a molecule? - ANSWER -a group of cell folds (Crista) in their cell membranes to maximize
atoms bonded together the SA which speeds up the processes of cellular
metabolism
What is a neutron? - ANSWER -a neutrally
charged ion inside the nucleus with proton What is the function of a cell membrane? -
ANSWER -To protect the nucleus and filter
particles
What is organization? - ANSWER -organic
structure or compositions
What is the structure of a phospholipid? -
ANSWER -made up of 2 hydrophobic tails for
What is a proton? - ANSWER -A positive ion in each hydrophilic head. Structure is flexible and
the nucleus with a neutron changes shape easily due to fluidity. Structure is
strong due to attraction between hydrophobic tails
What are ribosomes? - ANSWER -tiny mitten-
How are integral proteins different from peripheral
shaped organelles that manufacture proteins
proteins? - ANSWER -integral protein is inside
the lipid bilayer, where peripheral protein are
attached to the hydrophilic heads of the bilayer
What is a saprotroph? - ANSWER -organism
that live and feeds on dead organic matter
What are the 4 functions of membrane bound
proteins? - ANSWER -a) Immune system
What is tissue? - ANSWER -An aggregate of
receptors (b) act as carrier proteins to transport
similar cells and cell products
molecules across cell membranes (c) signal
transduction (d) cell-cell adhesion
What happens to the SA:V ratio when the size of the
cell increases? - ANSWER -the ratio is Why are carrier proteins and channel proteins
becoming smaller ad smaller, giving a cell less different types of transport proteins? -
surface area for the transport of nutrients for given
ANSWER -both are integral membrane proteins
unit volume
involved in moving things across the membrane and
both have specific targets, but carrier proteins
transport molecules by changing shape while channel
What does the amount of surface area for a cell
proteins are like tubes to transport. Carrier proteins
dictate? - ANSWER -the larger the SA is, the are saturated, while channel proteins are unsaturated
rate of diffusion halves each time cell doubles size,
What are the characteristics common to all forms of
life? - ANSWER -reproduction, carbon,
responds to surroundings, Growth and Development, What are the 4 shared characteristics of cells? -
cellular organization, and energy ANSWER -DNA, cytoplasm, ribosome, and
plasma membranes
What are the levels of biological organization from
simple to most complex? - ANSWER - What is the definition of unicellular organisms? -
Molecules, cell, tissue, organ, organism, population, ANSWER -an organism that consists only of 1
community, ecosystem, biosphere cell eg. bacteria/microorganisms
What are the 4 most common types of biological What is the definition of multicellular organisms? -
molecules? - ANSWER -Proteins, nucleic acids, ANSWER -an organism that consists of multiple
carbohydrates, and lipids cells eg. human
Organelle - ANSWER -any of a number of What are the similarities and differences between
organized or specialized structures in a living cell prokaryotic and - ANSWER -eukaryotic cells?
Prokaryotic cells have no nuclei, unlike Eukaryotic
cells. Both are enclosed by membranes and have
Cell - ANSWER -The smallest structure and DNA. Prokaryotic cells have no independent
functional unit of an organism. organelles, except for the organelle of ribosome
Tissue - ANSWER -The material of specialized How do the cells in multicellular organisms become
cells and their products that make a wall of cells and specialized? - ANSWER -By controlling what
their products 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
Organ - ANSWER -a part of an organism that is protein are, and if protein is made what the
self-contained and serves a function microRNAs do
Organism - ANSWER -an individual animal, What is sexual reproduction? - ANSWER -the
plant, or single-celled life form production of a new living organism by combining
genetics of 2 different sexes/fusion of 2 gametes
What are the similarities and differences of a
population and an ecosystem? - ANSWER -a What is asexual reproduction? - ANSWER -the
population and ecosystem both include organisms, reproduction of offspring without the fusion of
however a population is one type of species while an gametes.
ecosystem is both biotic and abiotic things.
How do Growth and Development differ? -
What is the definition of emergent properties? - ANSWER -Growth is the process of
ANSWER -the feature that can't be directly Development, which is getting
from the features of its simpler parts eg. the taste of bigger/stronger/smarter
salt w/ the combination of Na+Cl
,IB Biology HL Test Questions with Verified Answers Graded A+
occupying that habitat
When consumers die, what gets nutrients and energy
from the dead? - ANSWER -The saprotrophs
and detritivores What is the definition of biosphere? -
ANSWER -it is the part of the earth's crust,
waters, and atmosphere that support life
What is the definition of homeostasis and an
example? - ANSWER -The ability or tendency
of an organism or cell to maintain internal equilibrium What is the definition of catabolism? -
by adjusting its physical processes. eg. body ANSWER -the metabolism breaking down
temperature in mammals complex into simple substances with the release of
energy
What is the definition of metabolism? -
ANSWER -The chemical processes in living What is the definition of cell? - ANSWER -the
organisms in order to maintain life. eg. the mammal's smallest functioning structure of living matter
body metabolism can change the need and
absorption of energy, depending on environment
What is the definition of cell membrane? -
ANSWER -The semipermeable membrane
How does "response to environment" differ from enclosing the cytoplasm of a cell
"adaptation to environment?" - ANSWER -
Response involves the behavior that results from the
environment, while adaptation is how structures or What is the definition of community? -
functions of an organism change in order to better ANSWER -a set of species found in the same
survive in the environment. place at the same time
What is the definition of adapt? - ANSWER -to What is the definition of cytoplasm? -
adjust to the environment ANSWER -The cell substance between cell
membrane and nucleus
What is the definition of anabolism? -
ANSWER -constructive metabolism that What is the definition of detritivore? -
synthesizes more complex substances from simple ANSWER -an organism that uses organic waste
substances as a food source
What is the definition of an atom? - ANSWER - What is the definition of differentiation? -
The smallest unit of matter ANSWER -process by which cells or tissues
change/specialize in development
What is the definition of autotroph? -
ANSWER -any organism capable of self What is an electron? - ANSWER -an elementary
nourishment to get energy particle having negative charge and exists outside of
the nucleus (electron cloud)
What is the definition of Biome? - ANSWER -a
large naturally occuring community of fauna and flora What is evolution? - ANSWER -process how
, IB Biology HL Test Questions with Verified Answers Graded A+
different living organisms developed and diversified and the cell has a limit before it is too large to
metabolize
What is growth? - ANSWER -increasing in
amount or complexity What does the amount of volume dictate in a cell? -
ANSWER -the number of reactions increase in
a cell the larger the volume
What is a heterotroph? - ANSWER -organism
deriving nutrients from complex organic substances
What are some adaptations by cells to maximize their
SA:V ratio? - ANSWER -Creating many more
What is a molecule? - ANSWER -a group of cell folds (Crista) in their cell membranes to maximize
atoms bonded together the SA which speeds up the processes of cellular
metabolism
What is a neutron? - ANSWER -a neutrally
charged ion inside the nucleus with proton What is the function of a cell membrane? -
ANSWER -To protect the nucleus and filter
particles
What is organization? - ANSWER -organic
structure or compositions
What is the structure of a phospholipid? -
ANSWER -made up of 2 hydrophobic tails for
What is a proton? - ANSWER -A positive ion in each hydrophilic head. Structure is flexible and
the nucleus with a neutron changes shape easily due to fluidity. Structure is
strong due to attraction between hydrophobic tails
What are ribosomes? - ANSWER -tiny mitten-
How are integral proteins different from peripheral
shaped organelles that manufacture proteins
proteins? - ANSWER -integral protein is inside
the lipid bilayer, where peripheral protein are
attached to the hydrophilic heads of the bilayer
What is a saprotroph? - ANSWER -organism
that live and feeds on dead organic matter
What are the 4 functions of membrane bound
proteins? - ANSWER -a) Immune system
What is tissue? - ANSWER -An aggregate of
receptors (b) act as carrier proteins to transport
similar cells and cell products
molecules across cell membranes (c) signal
transduction (d) cell-cell adhesion
What happens to the SA:V ratio when the size of the
cell increases? - ANSWER -the ratio is Why are carrier proteins and channel proteins
becoming smaller ad smaller, giving a cell less different types of transport proteins? -
surface area for the transport of nutrients for given
ANSWER -both are integral membrane proteins
unit volume
involved in moving things across the membrane and
both have specific targets, but carrier proteins
transport molecules by changing shape while channel
What does the amount of surface area for a cell
proteins are like tubes to transport. Carrier proteins
dictate? - ANSWER -the larger the SA is, the are saturated, while channel proteins are unsaturated
rate of diffusion halves each time cell doubles size,
