BIOLOGY PRAXIS QUESTIONS AND ANSWERS
WITH 100% VERIFIED SOLUTIONS GRADED
A+ 2026
What is Interphase? - answer-- mainly growth of a cell occurs in this phase rather than
cell division
- most cells live here
- except cancer
What is Mitosis? - answer-active cell division
What is the G1 phase (growth phase)? - answer-- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)? - answer--DNA replication
of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)? - answer--more directly preparing for M
-make microtubules
What is the G0 phase? - answer--no more cell division
- cells just grow
- ex. neuron
What is a Niche? - answer-An organism's particular role in an ecosystem, or how it
makes its living.
,What is an Ecosystem? - answer-A biological community of interacting organisms and
their physical environment.
What is Abiotic? - answer-Non-living things
What is Biotic? - answer-living things
What is a Biome? - answer-A group of ecosystems with similar climates and organisms
What is a Community? - answer-All the different populations that live together in an
area
What is a Species? - answer-A group of similar organisms that can breed and produce
fertile offspring.
What is Binary fission? - 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? - 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? - answer-He discovered both protists and bacteria.
Advancing the field of microscopy through the discovery of microorganisms.
What is Commensalism? - answer-A relationship between two organisms in which one
organism benefits and the other is unaffected
What is Mimicry? - answer-The resemblance of one species to another species
, What is Mutualism? - answer-A relationship between two species in which both species
benefit (symbiotic relationship)
What is Parasitism? - answer-A relationship between two organisms of different species
where one benefits and the other is harmed
What are three essential elements for plant growth that are obtained primarily through
the roots? - answer-- Magnesium
- Nitrogen
- Potassium
What is Intraspecific competition? - answer-Competition between members of the
same species. Ex: Two male red deer in competition for a mate
What are the Significant Figure Rules? - 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) - answer-Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Mammals, reptiles, birds, and fish all belong to the same... - answer-Phylum: Chordata
(Backbone)
What is Trisomy? - answer-A condition in which an extra copy of a chromosome is
present in the cell nuclei, causing developmental abnormalities.
WITH 100% VERIFIED SOLUTIONS GRADED
A+ 2026
What is Interphase? - answer-- mainly growth of a cell occurs in this phase rather than
cell division
- most cells live here
- except cancer
What is Mitosis? - answer-active cell division
What is the G1 phase (growth phase)? - answer-- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)? - answer--DNA replication
of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)? - answer--more directly preparing for M
-make microtubules
What is the G0 phase? - answer--no more cell division
- cells just grow
- ex. neuron
What is a Niche? - answer-An organism's particular role in an ecosystem, or how it
makes its living.
,What is an Ecosystem? - answer-A biological community of interacting organisms and
their physical environment.
What is Abiotic? - answer-Non-living things
What is Biotic? - answer-living things
What is a Biome? - answer-A group of ecosystems with similar climates and organisms
What is a Community? - answer-All the different populations that live together in an
area
What is a Species? - answer-A group of similar organisms that can breed and produce
fertile offspring.
What is Binary fission? - 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? - 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? - answer-He discovered both protists and bacteria.
Advancing the field of microscopy through the discovery of microorganisms.
What is Commensalism? - answer-A relationship between two organisms in which one
organism benefits and the other is unaffected
What is Mimicry? - answer-The resemblance of one species to another species
, What is Mutualism? - answer-A relationship between two species in which both species
benefit (symbiotic relationship)
What is Parasitism? - answer-A relationship between two organisms of different species
where one benefits and the other is harmed
What are three essential elements for plant growth that are obtained primarily through
the roots? - answer-- Magnesium
- Nitrogen
- Potassium
What is Intraspecific competition? - answer-Competition between members of the
same species. Ex: Two male red deer in competition for a mate
What are the Significant Figure Rules? - 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) - answer-Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species
Mammals, reptiles, birds, and fish all belong to the same... - answer-Phylum: Chordata
(Backbone)
What is Trisomy? - answer-A condition in which an extra copy of a chromosome is
present in the cell nuclei, causing developmental abnormalities.
