5236 Biology Praxis Exam Questions and
Answers Graded A+
What is Interphase? - Correct answer-- mainly growth of a cell occurs in this phase
rather than cell division
- most cells live here
- except cancer
What is Mitosis? - Correct answer-active cell division
What is the G1 phase (growth phase)? - Correct answer-- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)? - Correct answer--DNA replication
of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)? - Correct answer--more directly preparing
for M
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,-make microtubules
What is the G0 phase? - Correct answer--no more cell division
- cells just grow
- ex. neuron
What is a Niche? - Correct answer-An organism's particular role in an ecosystem,
or how it makes its living.
What is an Ecosystem? - Correct answer-A biological community of interacting
organisms and their physical environment.
What is Abiotic? - Correct answer-Non-living things
What is Biotic? - Correct answer-living things
What is a Biome? - Correct answer-A group of ecosystems with similar climates
and organisms
What is a Community? - Correct answer-All the different populations that live
together in an area
What is a Species? - Correct answer-A group of similar organisms that can breed
and produce fertile offspring.
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,What is Binary fission? - Correct answer-A form of asexual reproduction in single-
celled organisms by which one cell divides into two cells of the same size (usually
in prokaryotes)
What is External fertilization? - Correct answer-Fertilization that occurs outside the
body of an organism. The sperms and eggs are released in an external environment.
Usually requires a body of water
Who is Antoni van Leeuwenhoek? - Correct answer-He discovered both protists
and bacteria. Advancing the field of microscopy through the discovery of
microorganisms.
What is Commensalism? - Correct answer-A relationship between two organisms
in which one organism benefits and the other is unaffected
What is Mimicry? - Correct answer-The resemblance of one species to another
species
What is Mutualism? - Correct answer-A relationship between two species in which
both species benefit (symbiotic relationship)
What is Parasitism? - Correct answer-A relationship between two organisms of
different species where one benefits and the other is harmed
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, What are three essential elements for plant growth that are obtained primarily
through the roots? - Correct answer-- Magnesium
- Nitrogen
- Potassium
What is Intraspecific competition? - Correct answer-Competition between
members of the same species. Ex: Two male red deer in competition for a mate
What are the Significant Figure Rules? - Correct answer-1. non-zeros are always
significant
2. zeros between two other sig figs are significant
3. all final zeros after the decimal point are significant
4. zeros used solely for spacing the decimal point are not significant unless a
decimal point is present
What are the 8 levels of Taxonomic Hierarchy? (Hint: Dear King Phillip Came
Over For Great Soup) - Correct answer-Domain, Kingdom, Phylum, Class, Order,
Family, Genus, Species
Mammals, reptiles, birds, and fish all belong to the same... - Correct answer-
Phylum: Chordata (Backbone)
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
Answers Graded A+
What is Interphase? - Correct answer-- mainly growth of a cell occurs in this phase
rather than cell division
- most cells live here
- except cancer
What is Mitosis? - Correct answer-active cell division
What is the G1 phase (growth phase)? - Correct answer-- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)? - Correct answer--DNA replication
of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)? - Correct answer--more directly preparing
for M
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,-make microtubules
What is the G0 phase? - Correct answer--no more cell division
- cells just grow
- ex. neuron
What is a Niche? - Correct answer-An organism's particular role in an ecosystem,
or how it makes its living.
What is an Ecosystem? - Correct answer-A biological community of interacting
organisms and their physical environment.
What is Abiotic? - Correct answer-Non-living things
What is Biotic? - Correct answer-living things
What is a Biome? - Correct answer-A group of ecosystems with similar climates
and organisms
What is a Community? - Correct answer-All the different populations that live
together in an area
What is a Species? - Correct answer-A group of similar organisms that can breed
and produce fertile offspring.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
,What is Binary fission? - Correct answer-A form of asexual reproduction in single-
celled organisms by which one cell divides into two cells of the same size (usually
in prokaryotes)
What is External fertilization? - Correct answer-Fertilization that occurs outside the
body of an organism. The sperms and eggs are released in an external environment.
Usually requires a body of water
Who is Antoni van Leeuwenhoek? - Correct answer-He discovered both protists
and bacteria. Advancing the field of microscopy through the discovery of
microorganisms.
What is Commensalism? - Correct answer-A relationship between two organisms
in which one organism benefits and the other is unaffected
What is Mimicry? - Correct answer-The resemblance of one species to another
species
What is Mutualism? - Correct answer-A relationship between two species in which
both species benefit (symbiotic relationship)
What is Parasitism? - Correct answer-A relationship between two organisms of
different species where one benefits and the other is harmed
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, What are three essential elements for plant growth that are obtained primarily
through the roots? - Correct answer-- Magnesium
- Nitrogen
- Potassium
What is Intraspecific competition? - Correct answer-Competition between
members of the same species. Ex: Two male red deer in competition for a mate
What are the Significant Figure Rules? - Correct answer-1. non-zeros are always
significant
2. zeros between two other sig figs are significant
3. all final zeros after the decimal point are significant
4. zeros used solely for spacing the decimal point are not significant unless a
decimal point is present
What are the 8 levels of Taxonomic Hierarchy? (Hint: Dear King Phillip Came
Over For Great Soup) - Correct answer-Domain, Kingdom, Phylum, Class, Order,
Family, Genus, Species
Mammals, reptiles, birds, and fish all belong to the same... - Correct answer-
Phylum: Chordata (Backbone)
©COPYRIGHT 2025, ALL RIGHTS RESERVED 4
