UF BSC-2010 (Integrated Principles of Biology 1) Exam 2 -
Fall 2018 ACTUAL EXAM Updated 2025/ MOSTLY TESTED
QUESTIONS AND CORRECT DETAILED ANSWERS| 100%
CORRECT SOLUTIONS/GRADE A+
What are the subphases of Interphase, and what happens in each?
Ans: G1 - The cell grows physically larger, copies organelles, and makes the
molecular building blocks it will need in later steps.
S - The cell synthesizes a complete copy of the DNA in its nucleus. It also duplicates a
microtubule-organizing structure called the centrosome. The centrosomes help separate
DNA during M phase.
G2 - The cell grows more, makes proteins and organelles, and begins to reorganize its
contents in preparation for mitosis.
Qiz Prophase
Ans: Nuclear envelope intact
Chromosomes replicated and condensed - Sister chromatids paired up
Mitotic spindle in place
,Qiz Prometaphase
Ans: Nuclear envelope breaks down
Kinetochore microtubules attach to chromosomes
"Tug of war"
Chromosomes are dragged to the middle of the cell
Qiz Metaphase
Ans: Chromosomes are lined up at the metaphase plate
Qiz Anaphase
Ans: Linkages between sister chromatids are severed
Kinetochore microtubules drag sister chromatids to opposite poles of the cell
Qiz Telophase
Ans: Chromosomes reach opposite poles of the cell
Nuclear envelope re-forms around separated sets of chromosomes
Chromosomes de-condense
,Mitotic spindle disassembles
*ONE cell, TWO nuclei
Qiz List factors that may promote cell division
Ans:
Qiz List factors that may halt cell division
Ans:
Qiz Differentiate between proto-oncogenes and tumor suppressor genes
Ans: Proto-oncogenes:
-Genes that code for proteins that PROMOTE cell division
-Mutation -----> Hyperactive protein
- Similar to a "gas pedal"
- In NORMAL CELLS: ACTIVATE these proteins before division
- CANCER CELLS: these proteins are CONSTITUTIVELY (always) ACTIVE
Tumor Suppressor Genes
- Genes that code for proteins that HALT cell division
- Mutation ----> Inactive protein
- Similar to a "break pedal"
, - In NORMAL CELLS: INACTIVATE these proteins before division
- In CANCER CELLS: these proteins are INACTIVE
Qiz Chromosome
Ans: Condensed threads of genetic material formed from chromatin as a cell prepares
to divide
Qiz Homologous Chromosome
Ans: Chromosomes that have the same sequence of genes and the same structure
Qiz Diploid
Ans: 2 sets of chromosomes
Qiz Somatic Cell
Ans: Any cell of a living organism other than the reproductive cells.
Qiz Haploid
Ans: 1 set of chromosomes
Qiz Gamete Cell
Fall 2018 ACTUAL EXAM Updated 2025/ MOSTLY TESTED
QUESTIONS AND CORRECT DETAILED ANSWERS| 100%
CORRECT SOLUTIONS/GRADE A+
What are the subphases of Interphase, and what happens in each?
Ans: G1 - The cell grows physically larger, copies organelles, and makes the
molecular building blocks it will need in later steps.
S - The cell synthesizes a complete copy of the DNA in its nucleus. It also duplicates a
microtubule-organizing structure called the centrosome. The centrosomes help separate
DNA during M phase.
G2 - The cell grows more, makes proteins and organelles, and begins to reorganize its
contents in preparation for mitosis.
Qiz Prophase
Ans: Nuclear envelope intact
Chromosomes replicated and condensed - Sister chromatids paired up
Mitotic spindle in place
,Qiz Prometaphase
Ans: Nuclear envelope breaks down
Kinetochore microtubules attach to chromosomes
"Tug of war"
Chromosomes are dragged to the middle of the cell
Qiz Metaphase
Ans: Chromosomes are lined up at the metaphase plate
Qiz Anaphase
Ans: Linkages between sister chromatids are severed
Kinetochore microtubules drag sister chromatids to opposite poles of the cell
Qiz Telophase
Ans: Chromosomes reach opposite poles of the cell
Nuclear envelope re-forms around separated sets of chromosomes
Chromosomes de-condense
,Mitotic spindle disassembles
*ONE cell, TWO nuclei
Qiz List factors that may promote cell division
Ans:
Qiz List factors that may halt cell division
Ans:
Qiz Differentiate between proto-oncogenes and tumor suppressor genes
Ans: Proto-oncogenes:
-Genes that code for proteins that PROMOTE cell division
-Mutation -----> Hyperactive protein
- Similar to a "gas pedal"
- In NORMAL CELLS: ACTIVATE these proteins before division
- CANCER CELLS: these proteins are CONSTITUTIVELY (always) ACTIVE
Tumor Suppressor Genes
- Genes that code for proteins that HALT cell division
- Mutation ----> Inactive protein
- Similar to a "break pedal"
, - In NORMAL CELLS: INACTIVATE these proteins before division
- In CANCER CELLS: these proteins are INACTIVE
Qiz Chromosome
Ans: Condensed threads of genetic material formed from chromatin as a cell prepares
to divide
Qiz Homologous Chromosome
Ans: Chromosomes that have the same sequence of genes and the same structure
Qiz Diploid
Ans: 2 sets of chromosomes
Qiz Somatic Cell
Ans: Any cell of a living organism other than the reproductive cells.
Qiz Haploid
Ans: 1 set of chromosomes
Qiz Gamete Cell
