5236 Biology Praxis Exam||Latest
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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
-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.
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
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)
What is Trisomy? -CORRECT ANSWER A condition in which an extra copy of a
chromosome is present in the cell nuclei, causing developmental abnormalities.
What is Chromatography? -CORRECT ANSWER A technique that is used to separate
the components of a mixture based on the tendency of each component to travel or be
drawn across the surface of another material. (Separating pigments from plant leaves)
What is Meristem? -CORRECT ANSWER Undifferentiated plant tissue from which new
cells are formed to enable growth
What are Density-independent factors? -CORRECT ANSWER Limiting factor that
affects all populations in similar ways, regardless of population size ( Ex: food or
nutrient limitation, climate extremes, seasonal cycles, catastrophic factors such as
hurricanes, droughts, or fires)
What are two examples of positive feedback loops? -CORRECT ANSWER
Breastfeeding and oxytocin
The role of denitrifying bacteria in the nitrogen cycle is to _______ -CORRECT
ANSWER Convert nitrate to molecular nitrogen
What are Guard cells? -CORRECT ANSWER Guard cells change shape to open or
close the stoma to regulate water loss by evaporation.
What is ecological succession? -CORRECT ANSWER Series of gradual changes that
occur in a community following a disturbance
In humans, deoxygenated blood enters the right heart through the ______ -CORRECT
ANSWER venae cavae
What is filial imprinting? -CORRECT ANSWER The recognition, response, and
attachment of young to a particular adult or object. Usually irreversible. Ducks and
geese can imprint on humans (whatever they see first)
What is operant conditioning? -CORRECT ANSWER A type of learning in which
behavior is strengthened if followed by a reinforcer or diminished if followed by a
punisher
Exam With Detailed Questions And
Well Verified Answers||Already 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
-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.
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
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)
What is Trisomy? -CORRECT ANSWER A condition in which an extra copy of a
chromosome is present in the cell nuclei, causing developmental abnormalities.
What is Chromatography? -CORRECT ANSWER A technique that is used to separate
the components of a mixture based on the tendency of each component to travel or be
drawn across the surface of another material. (Separating pigments from plant leaves)
What is Meristem? -CORRECT ANSWER Undifferentiated plant tissue from which new
cells are formed to enable growth
What are Density-independent factors? -CORRECT ANSWER Limiting factor that
affects all populations in similar ways, regardless of population size ( Ex: food or
nutrient limitation, climate extremes, seasonal cycles, catastrophic factors such as
hurricanes, droughts, or fires)
What are two examples of positive feedback loops? -CORRECT ANSWER
Breastfeeding and oxytocin
The role of denitrifying bacteria in the nitrogen cycle is to _______ -CORRECT
ANSWER Convert nitrate to molecular nitrogen
What are Guard cells? -CORRECT ANSWER Guard cells change shape to open or
close the stoma to regulate water loss by evaporation.
What is ecological succession? -CORRECT ANSWER Series of gradual changes that
occur in a community following a disturbance
In humans, deoxygenated blood enters the right heart through the ______ -CORRECT
ANSWER venae cavae
What is filial imprinting? -CORRECT ANSWER The recognition, response, and
attachment of young to a particular adult or object. Usually irreversible. Ducks and
geese can imprint on humans (whatever they see first)
What is operant conditioning? -CORRECT ANSWER A type of learning in which
behavior is strengthened if followed by a reinforcer or diminished if followed by a
punisher
