5236 Biology Praxis Exam
Questions and Answers with
Verified Solutions| Latest Update
What is Interphase?
- mainly growth of a cell occurs in this phase rather than cell division
- most cells live here
- except cancer
What is Mitosis?
active cell division
What is the G1 phase (growth phase)?
- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)?
-DNA replication
,of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)?
-more directly preparing for M
-make microtubules
What is the G0 phase?
-no more cell division
- cells just grow
- ex. neuron
What is a Niche?
An organism's particular role in an ecosystem, or how it makes its living.
What is an Ecosystem?
A biological community of interacting organisms and their physical environment.
What is Abiotic?
Non-living things
,What is Biotic?
living things
What is a Biome?
A group of ecosystems with similar climates and organisms
What is a Community?
All the different populations that live together in an area
What is a Species?
A group of similar organisms that can breed and produce fertile offspring.
What is Binary fission?
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?
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?
He discovered both protists and bacteria. Advancing the field of microscopy through the
discovery of microorganisms.
What is Commensalism?
A relationship between two organisms in which one organism benefits and the other is
unaffected
What is Mimicry?
The resemblance of one species to another species
What is Mutualism?
A relationship between two species in which both species benefit (symbiotic relationship)
What is Parasitism?
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?
- Magnesium
- Nitrogen
Questions and Answers with
Verified Solutions| Latest Update
What is Interphase?
- mainly growth of a cell occurs in this phase rather than cell division
- most cells live here
- except cancer
What is Mitosis?
active cell division
What is the G1 phase (growth phase)?
- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)?
-DNA replication
,of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)?
-more directly preparing for M
-make microtubules
What is the G0 phase?
-no more cell division
- cells just grow
- ex. neuron
What is a Niche?
An organism's particular role in an ecosystem, or how it makes its living.
What is an Ecosystem?
A biological community of interacting organisms and their physical environment.
What is Abiotic?
Non-living things
,What is Biotic?
living things
What is a Biome?
A group of ecosystems with similar climates and organisms
What is a Community?
All the different populations that live together in an area
What is a Species?
A group of similar organisms that can breed and produce fertile offspring.
What is Binary fission?
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?
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?
He discovered both protists and bacteria. Advancing the field of microscopy through the
discovery of microorganisms.
What is Commensalism?
A relationship between two organisms in which one organism benefits and the other is
unaffected
What is Mimicry?
The resemblance of one species to another species
What is Mutualism?
A relationship between two species in which both species benefit (symbiotic relationship)
What is Parasitism?
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?
- Magnesium
- Nitrogen
