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IB Biology HL exam with correct answers
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IB Biology HL exam with correct answers
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IB Biology HL exam with correctanswers
What are the characteristics common to all forms of life? - .......🔷ANSWERS🔶......✔✔
reproduction, carbon, responds to surroundings, Growth and Development, cellular organization,
and energy
What are the levels of biological organization from simple to most complex?
- .......🔷ANSWERS🔶......✔✔ Molecules, cell, tissue, organ, organism, population, community,
ecosystem, biosphere
What are the 4 most common types of biological molecules? - .......🔷ANSWERS🔶......✔✔ Proteins,
nucleic acids, carbohydrates, and lipids
Organelle - .......🔷ANSWERS🔶......✔✔ any of a number of organized or specialized structures in a
living cell
Cell - .......🔷ANSWERS🔶......✔✔ The smallest structure and functional unit of an organism.
Tissue - .......🔷ANSWERS🔶......✔✔ The material of specialized cells and their products that make a
wall of cells and their products
Organ - .......🔷ANSWERS🔶......✔✔ a part of an organism that is self-contained and serves a
function
Organism - .......🔷ANSWERS🔶......✔✔ an individual animal, plant, or single-celled life form
What are the similarities and differences of a population and an ecosystem?
- .......🔷ANSWERS🔶......✔✔ 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? - .......🔷ANSWERS🔶......✔✔ 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? - .......🔷ANSWERS🔶......✔✔ DNA, cytoplasm,
ribosome, and plasma membranes
What is the definition of unicellular organisms? - .......🔷ANSWERS🔶......✔✔ an organism that
consists only of 1 cell eg. bacteria/microorganisms
What is the definition of multicellular organisms? - .......🔷ANSWERS🔶......✔✔ an organism that
consists of multiple cells eg. human
What are the similarities and differences between prokaryotic and - .......🔷ANSWERS🔶......✔✔
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? - .......🔷ANSWERS🔶......✔✔ 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? - .......🔷ANSWERS🔶......✔✔ the production of a new living organism
by combining genetics of 2 different sexes/fusion of 2 gametes
What is asexual reproduction? - .......🔷ANSWERS🔶......✔✔ the reproduction of offspring without
the fusion of gametes.
How do Growth and Development differ? - .......🔷ANSWERS🔶......✔✔ Growth is the process of
Development, which is getting bigger/stronger/smarter
,When consumers die, what gets nutrients and energy from the dead? - .......🔷ANSWERS🔶......✔✔
The saprotrophs and detritivores
What is the definition of homeostasis and an example? - .......🔷ANSWERS🔶......✔✔ 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? - .......🔷ANSWERS🔶......✔✔ 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?"
- .......🔷ANSWERS🔶......✔✔ 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? - .......🔷ANSWERS🔶......✔✔ to adjust to the environment
What is the definition of anabolism? - .......🔷ANSWERS🔶......✔✔ constructive metabolism that
synthesizes more complex substances from simple substances
What is the definition of an atom? - .......🔷ANSWERS🔶......✔✔ The smallest unit of matter
What is the definition of autotroph? - .......🔷ANSWERS🔶......✔✔ any organism capable of self
nourishment to get energy
What is the definition of Biome? - .......🔷ANSWERS🔶......✔✔ a large naturally occuring
community of fauna and flora occupying that habitat
What is the definition of biosphere? - .......🔷ANSWERS🔶......✔✔ it is the part of the earth's crust,
waters, and atmosphere that support life
, What is the definition of catabolism? - .......🔷ANSWERS🔶......✔✔ the metabolism breaking down
complex into simple substances with the release of energy
What is the definition of cell? - .......🔷ANSWERS🔶......✔✔ the smallest functioning structure of
living matter
What is the definition of cell membrane? - .......🔷ANSWERS🔶......✔✔ The semipermeable
membrane enclosing the cytoplasm of a cell
What is the definition of community? - .......🔷ANSWERS🔶......✔✔ a set of species found in the
same place at the same time
What is the definition of cytoplasm? - .......🔷ANSWERS🔶......✔✔ The cell substance between cell
membrane and nucleus
What is the definition of detritivore? - .......🔷ANSWERS🔶......✔✔ an organism that uses organic
waste as a food source
What is the definition of differentiation? - .......🔷ANSWERS🔶......✔✔ process by which cells or
tissues change/specialize in development
What is an electron? - .......🔷ANSWERS🔶......✔✔ an elementary particle having negative charge
and exists outside of the nucleus (electron cloud)
What is evolution? - .......🔷ANSWERS🔶......✔✔ process how different living organisms developed
and diversified
What is growth? - .......🔷ANSWERS🔶......✔✔ increasing in amount or complexity
What is a heterotroph? - .......🔷ANSWERS🔶......✔✔ organism deriving nutrients from complex
organic substances
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