UCI Bio 93 Final Exam Questions With Correct
Answers
What |are |the |four |most |common |elements |in |living |matter? |- |CORRECT |ANSWER✔✔-
Hydrogen, |Oxygen, |Nitrogen, |and |Carbon |--make |up |96% |of |all |living |matter.
Properties |of |Acids |- |CORRECT |ANSWER✔✔-Donate |H+ |to |a |solution, |accept |electrons, |and |
have |a |pH |of |<7
What |happens |in |the |S |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-DNA |Synthesis
What |happens |in |the |G1 |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-Growth |-- |cell |
contents |are |duplicated.
What |happens |in |the |G2 |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-More |growth |and |
preparation |for |division.
What |happens |in |the |M |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-Mitosis |(and |
cytokinesis |-- |division |of |the |cell).
What |are |the |subphases |of |mitosis? |- |CORRECT |ANSWER✔✔-Prophase, |Pre-metaphase, |
Metaphase, |Anaphase, |and |Telophase.
How |many |checkpoints |are |there |in |the |cell |cycle? |- |CORRECT |ANSWER✔✔-3 |-- |G1 |
checkpoint, |G2 |checkpoint, |and |the |M |checkpoint.
,What |is |a |Karyotype? |- |CORRECT |ANSWER✔✔-A |layout |of |Metaphase |chromosomes |matched |
with |their |homologous |pairs.
What |is |a |diploid |cell? |- |CORRECT |ANSWER✔✔-A |cell |with |46 |chromosomes |-- |somatic |cells.
What |is |a |haploid |cell? |- |CORRECT |ANSWER✔✔-A |cell |with |23 |chromosomes |-- |sex |cells.
What |does |the |mesoderm |give |rise |to? |- |CORRECT |ANSWER✔✔-the |notochord |(similar |to |a |
spinal |chord).
What |does |the |endoderm |give |rise |to? |- |CORRECT |ANSWER✔✔-the |digestive |tract.
What |does |the |ectoderm |give |rise |to? |- |CORRECT |ANSWER✔✔-the |nervous |system
|(brain)/neural |plate.
If |2n |= |18, |how |many |chromosomes |come |from |the |mother? |- |CORRECT |ANSWER✔✔-9 |-- |half
|from |mom |and |half |from |dad
Meiosis |- |CORRECT |ANSWER✔✔-Meiosis |is |a |specialized |type |of |cell |division |that |reduces |the |
chromosome |number |by |half, |creating |four |haploid |cells, |each |genetically |distinct |from |the |
parent |cell |that |gave |rise |to |them.
What |two |structures |does |the |chiasma |connect? |- |CORRECT |ANSWER✔✔-Non-sister |
chromatids.
What |are |the |steps |of |meiosis? |- |CORRECT |ANSWER✔✔-Prophase |I, |Metaphase |I, |Anaphase |I, |
Telophase |I |& |cytokinesis |(then |a |second |set |of |phases)
What |does |meiosis |1 |deal |with? |- |CORRECT |ANSWER✔✔-homologous |chromosomes.
, What |happens |in |prophase |1? |- |CORRECT |ANSWER✔✔-The |chromosomes |condense, |the |
nuclear |envelope |breaks |down, |chromosomes |cross |over, |and |meiotic |spindle |forms.
What |happens |in |metaphase |1? |- |CORRECT |ANSWER✔✔-the |pairs |of |homologous |
chromosomes |are |now |tightly |condensed |and |coiled |and |become |arranged |on |the |metaphase |
plate.
What |happens |in |anaphase |1? |- |CORRECT |ANSWER✔✔-the |pairs |of |chromosomes |are |pulled |
apart |by |the |spindle |fibers |(microtubules).
What |happens |in |Telophase |1 |and |cytokinesis? |- |CORRECT |ANSWER✔✔-The |homologous |
chromosome |pairs |complete |their |migration |to |the |two |poles |as |a |result |of |the |action |of |the |
spindle. |Now |a |haploid |set |of |chromosomes |is |at |each |pole, |with |each |chromosome |still |
having |two |chromatids. |A |nuclear |envelope |reforms |around |each |chromosome |set, |the |spindle
|disappears, |and |cytokinesis |follows.
What |happens |during |meiosis |2? |- |CORRECT |ANSWER✔✔-sister |chromatids |separate.
What |happens |in |prophase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-A |new |spindle |forms |
around |the |chromosomes.
What |happens |in |metaphase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-Metaphase |2 |
chromosomes |line |up |at |the |equator.
What |happens |in |anaphase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-Centromeres |divide |
chromatids |move |to |opposite |poles |of |the |cells.
What |happens |during |telophase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-A |nuclear |envelope |
forms |around |each |set |of |chromosomes |and |the |cytoplasm |divides.
Answers
What |are |the |four |most |common |elements |in |living |matter? |- |CORRECT |ANSWER✔✔-
Hydrogen, |Oxygen, |Nitrogen, |and |Carbon |--make |up |96% |of |all |living |matter.
Properties |of |Acids |- |CORRECT |ANSWER✔✔-Donate |H+ |to |a |solution, |accept |electrons, |and |
have |a |pH |of |<7
What |happens |in |the |S |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-DNA |Synthesis
What |happens |in |the |G1 |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-Growth |-- |cell |
contents |are |duplicated.
What |happens |in |the |G2 |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-More |growth |and |
preparation |for |division.
What |happens |in |the |M |phase |of |the |cell |cycle? |- |CORRECT |ANSWER✔✔-Mitosis |(and |
cytokinesis |-- |division |of |the |cell).
What |are |the |subphases |of |mitosis? |- |CORRECT |ANSWER✔✔-Prophase, |Pre-metaphase, |
Metaphase, |Anaphase, |and |Telophase.
How |many |checkpoints |are |there |in |the |cell |cycle? |- |CORRECT |ANSWER✔✔-3 |-- |G1 |
checkpoint, |G2 |checkpoint, |and |the |M |checkpoint.
,What |is |a |Karyotype? |- |CORRECT |ANSWER✔✔-A |layout |of |Metaphase |chromosomes |matched |
with |their |homologous |pairs.
What |is |a |diploid |cell? |- |CORRECT |ANSWER✔✔-A |cell |with |46 |chromosomes |-- |somatic |cells.
What |is |a |haploid |cell? |- |CORRECT |ANSWER✔✔-A |cell |with |23 |chromosomes |-- |sex |cells.
What |does |the |mesoderm |give |rise |to? |- |CORRECT |ANSWER✔✔-the |notochord |(similar |to |a |
spinal |chord).
What |does |the |endoderm |give |rise |to? |- |CORRECT |ANSWER✔✔-the |digestive |tract.
What |does |the |ectoderm |give |rise |to? |- |CORRECT |ANSWER✔✔-the |nervous |system
|(brain)/neural |plate.
If |2n |= |18, |how |many |chromosomes |come |from |the |mother? |- |CORRECT |ANSWER✔✔-9 |-- |half
|from |mom |and |half |from |dad
Meiosis |- |CORRECT |ANSWER✔✔-Meiosis |is |a |specialized |type |of |cell |division |that |reduces |the |
chromosome |number |by |half, |creating |four |haploid |cells, |each |genetically |distinct |from |the |
parent |cell |that |gave |rise |to |them.
What |two |structures |does |the |chiasma |connect? |- |CORRECT |ANSWER✔✔-Non-sister |
chromatids.
What |are |the |steps |of |meiosis? |- |CORRECT |ANSWER✔✔-Prophase |I, |Metaphase |I, |Anaphase |I, |
Telophase |I |& |cytokinesis |(then |a |second |set |of |phases)
What |does |meiosis |1 |deal |with? |- |CORRECT |ANSWER✔✔-homologous |chromosomes.
, What |happens |in |prophase |1? |- |CORRECT |ANSWER✔✔-The |chromosomes |condense, |the |
nuclear |envelope |breaks |down, |chromosomes |cross |over, |and |meiotic |spindle |forms.
What |happens |in |metaphase |1? |- |CORRECT |ANSWER✔✔-the |pairs |of |homologous |
chromosomes |are |now |tightly |condensed |and |coiled |and |become |arranged |on |the |metaphase |
plate.
What |happens |in |anaphase |1? |- |CORRECT |ANSWER✔✔-the |pairs |of |chromosomes |are |pulled |
apart |by |the |spindle |fibers |(microtubules).
What |happens |in |Telophase |1 |and |cytokinesis? |- |CORRECT |ANSWER✔✔-The |homologous |
chromosome |pairs |complete |their |migration |to |the |two |poles |as |a |result |of |the |action |of |the |
spindle. |Now |a |haploid |set |of |chromosomes |is |at |each |pole, |with |each |chromosome |still |
having |two |chromatids. |A |nuclear |envelope |reforms |around |each |chromosome |set, |the |spindle
|disappears, |and |cytokinesis |follows.
What |happens |during |meiosis |2? |- |CORRECT |ANSWER✔✔-sister |chromatids |separate.
What |happens |in |prophase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-A |new |spindle |forms |
around |the |chromosomes.
What |happens |in |metaphase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-Metaphase |2 |
chromosomes |line |up |at |the |equator.
What |happens |in |anaphase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-Centromeres |divide |
chromatids |move |to |opposite |poles |of |the |cells.
What |happens |during |telophase |2 |of |meiosis? |- |CORRECT |ANSWER✔✔-A |nuclear |envelope |
forms |around |each |set |of |chromosomes |and |the |cytoplasm |divides.
