5236 BIOLOGY PRAXIS EXAM
QUESTIONS AND ANSWERS
What is Interphase? - Correct Answers -- mainly growth of a cell occurs in this phase
rather than cell division
- most cells live here
- except cancer
What is Mitosis? - Correct Answers -active cell division
What is the G1 phase (growth phase)? - Correct Answers -- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)? - Correct Answers --DNA replication
of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)? - Correct Answers --more directly preparing
for M
-make microtubules
A teacher asks students to identify a type of organism that reproduces primarily through
asexual reproduction. Which of the following is the most accurate response?
A) A whale
B) A shark
C) A maple tree
D) A bacterium - Correct Answers -D) A bacterium
Students spread bacteria on several slabs of solid culture medium. Some of the slabs
were prepared from a culture medium that contained glucose, whereas the remaining
slabs were prepared from a culture medium that lacked glucose or any other simple
sugar. The students placed the inoculated slabs in an incubator overnight and recorded
observations the following day. The students found that colonies of bacteria were visible
only on the glucose-containing slabs. Which of the following ideas is most closely linked
to the results of the experiment?
A) Living things adapt to their environment
B) Living things require a source of energy
,C) Living things are sensitive and respond to stimuli
D) Living things can move from one location to another - Correct Answers -B) Living
things require a source of energy
A teacher is preparing a lesson on how biotechnology is used in research. Which of the
following is an example of how biotechnology is used to produce transgenic organisms?
A) Selectively breeding dogs to maximize specific behaviors
B) Editing the DNA of rice plants to introduce specific base-pair substitutions
C) Inserting a jellyfish gene into the genome of different strains of mice
D) Translocating deer from a large population to a small, isolated population - Correct
Answers -C) Inserting a jellyfish gene into the genome of different strains of mice
What is the G0 phase? - Correct Answers --no more cell division
- cells just grow
- ex. neuron
What is a Niche? - Correct Answers -An organism's particular role in an ecosystem, or
how it makes its living.
What is an Ecosystem? - Correct Answers -A biological community of interacting
organisms and their physical environment.
What is Abiotic? - Correct Answers -Non-living things
What is Biotic? - Correct Answers -living things
What is a Biome? - Correct Answers -A group of ecosystems with similar climates and
organisms
What is a Community? - Correct Answers -All the different populations that live together
in an area
What is a Species? - Correct Answers -A group of similar organisms that can breed and
produce fertile offspring.
What is Binary fission? - Correct Answers -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 Answers -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 Answers -He discovered both protists and
bacteria. Advancing the field of microscopy through the discovery of microorganisms.
, What is Commensalism? - Correct Answers -A relationship between two organisms in
which one organism benefits and the other is unaffected
What is Mimicry? - Correct Answers -The resemblance of one species to another
species
What is Mutualism? - Correct Answers -A relationship between two species in which
both species benefit (symbiotic relationship)
What is Parasitism? - Correct Answers -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 Answers -- Magnesium
- Nitrogen
- Potassium
What is Intraspecific competition? - Correct Answers -Competition between members of
the same species. Ex: Two male red deer in competition for a mate
What are the Significant Figure Rules? - Correct Answers -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 Answers -Domain, Kingdom, Phylum, Class, Order, Family,
Genus, Species
Mammals, reptiles, birds, and fish all belong to the same... - Correct Answers -Phylum:
Chordata (Backbone)
What is Trisomy? - Correct Answers -A condition in which an extra copy of a
chromosome is present in the cell nuclei, causing developmental abnormalities.
What is Chromatography? - Correct Answers -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 Answers -Undifferentiated plant tissue from which new
cells are formed to enable growth
QUESTIONS AND ANSWERS
What is Interphase? - Correct Answers -- mainly growth of a cell occurs in this phase
rather than cell division
- most cells live here
- except cancer
What is Mitosis? - Correct Answers -active cell division
What is the G1 phase (growth phase)? - Correct Answers -- Occurs within interphase
- most of cell's life
- more organelles & proteins
What is the S phase (synthesis)? - Correct Answers --DNA replication
of 23 pairs (half from mom & half from dad)
- results in 46 pairs
What is the G2 Phase (Growth Phase 2)? - Correct Answers --more directly preparing
for M
-make microtubules
A teacher asks students to identify a type of organism that reproduces primarily through
asexual reproduction. Which of the following is the most accurate response?
A) A whale
B) A shark
C) A maple tree
D) A bacterium - Correct Answers -D) A bacterium
Students spread bacteria on several slabs of solid culture medium. Some of the slabs
were prepared from a culture medium that contained glucose, whereas the remaining
slabs were prepared from a culture medium that lacked glucose or any other simple
sugar. The students placed the inoculated slabs in an incubator overnight and recorded
observations the following day. The students found that colonies of bacteria were visible
only on the glucose-containing slabs. Which of the following ideas is most closely linked
to the results of the experiment?
A) Living things adapt to their environment
B) Living things require a source of energy
,C) Living things are sensitive and respond to stimuli
D) Living things can move from one location to another - Correct Answers -B) Living
things require a source of energy
A teacher is preparing a lesson on how biotechnology is used in research. Which of the
following is an example of how biotechnology is used to produce transgenic organisms?
A) Selectively breeding dogs to maximize specific behaviors
B) Editing the DNA of rice plants to introduce specific base-pair substitutions
C) Inserting a jellyfish gene into the genome of different strains of mice
D) Translocating deer from a large population to a small, isolated population - Correct
Answers -C) Inserting a jellyfish gene into the genome of different strains of mice
What is the G0 phase? - Correct Answers --no more cell division
- cells just grow
- ex. neuron
What is a Niche? - Correct Answers -An organism's particular role in an ecosystem, or
how it makes its living.
What is an Ecosystem? - Correct Answers -A biological community of interacting
organisms and their physical environment.
What is Abiotic? - Correct Answers -Non-living things
What is Biotic? - Correct Answers -living things
What is a Biome? - Correct Answers -A group of ecosystems with similar climates and
organisms
What is a Community? - Correct Answers -All the different populations that live together
in an area
What is a Species? - Correct Answers -A group of similar organisms that can breed and
produce fertile offspring.
What is Binary fission? - Correct Answers -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 Answers -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 Answers -He discovered both protists and
bacteria. Advancing the field of microscopy through the discovery of microorganisms.
, What is Commensalism? - Correct Answers -A relationship between two organisms in
which one organism benefits and the other is unaffected
What is Mimicry? - Correct Answers -The resemblance of one species to another
species
What is Mutualism? - Correct Answers -A relationship between two species in which
both species benefit (symbiotic relationship)
What is Parasitism? - Correct Answers -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 Answers -- Magnesium
- Nitrogen
- Potassium
What is Intraspecific competition? - Correct Answers -Competition between members of
the same species. Ex: Two male red deer in competition for a mate
What are the Significant Figure Rules? - Correct Answers -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 Answers -Domain, Kingdom, Phylum, Class, Order, Family,
Genus, Species
Mammals, reptiles, birds, and fish all belong to the same... - Correct Answers -Phylum:
Chordata (Backbone)
What is Trisomy? - Correct Answers -A condition in which an extra copy of a
chromosome is present in the cell nuclei, causing developmental abnormalities.
What is Chromatography? - Correct Answers -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 Answers -Undifferentiated plant tissue from which new
cells are formed to enable growth
