West Coast University-Los Angeles PHYS 261 - Lab Final
Practicum Questions with Answers 2026/2027
What are the phases of mitosis? correct answers interphase, early prophase, late prophase,
metaphase, anaphase, telophase, cytokinesis
Interphase correct answers - normal metabolic functions
- not part of mitosis
- 3 stages (G1, S, G2)
3 Stages of Interphase correct answers G1 - centrioles begin replicating
S - DNA is replicated
G2 - centrioles finish replicating
Early Prophase correct answers - chromatin condenses
- sister chromatids held together by centromere
- mitotic spindle (centrosomes)
Late Prophase correct answers - nuclear envelope breaks up
- chromosomes drawn to the middle of the cell
Metaphase correct answers - chromosomes line up at the equator
- enzymes separate the chromatids
Anaphase correct answers - shortest phase
- centromeres split
- chromatids -> chromosomes
- microtubules pull chromosomes to poles
, Telophase correct answers - prophase in reverse
- chromosomes uncoil -> chromatin
- new nuclear envelope forms
- spindle breaks down
- end of mitosis
Cytokinesis correct answers - actin microfilaments forms cleavage furrow
- division of cytoplasm
Molecular motion correct answers - random and erratic
- kinetic energy
passive transport correct answers movement driven by concentration/pressure differences
- equalizes gradient
active transport correct answers cell provides energy to power movement
Diffusion correct answers movement of molecules from region of higher concentration to lower
concentration
- driving force is kinetic energy
potential energy correct answers stored energy
(molecules want to move with the concentration gradient = high potential energy)
simple diffusion correct answers unassisted diffusion of solutes through the selectively
permeable membrane
Practicum Questions with Answers 2026/2027
What are the phases of mitosis? correct answers interphase, early prophase, late prophase,
metaphase, anaphase, telophase, cytokinesis
Interphase correct answers - normal metabolic functions
- not part of mitosis
- 3 stages (G1, S, G2)
3 Stages of Interphase correct answers G1 - centrioles begin replicating
S - DNA is replicated
G2 - centrioles finish replicating
Early Prophase correct answers - chromatin condenses
- sister chromatids held together by centromere
- mitotic spindle (centrosomes)
Late Prophase correct answers - nuclear envelope breaks up
- chromosomes drawn to the middle of the cell
Metaphase correct answers - chromosomes line up at the equator
- enzymes separate the chromatids
Anaphase correct answers - shortest phase
- centromeres split
- chromatids -> chromosomes
- microtubules pull chromosomes to poles
, Telophase correct answers - prophase in reverse
- chromosomes uncoil -> chromatin
- new nuclear envelope forms
- spindle breaks down
- end of mitosis
Cytokinesis correct answers - actin microfilaments forms cleavage furrow
- division of cytoplasm
Molecular motion correct answers - random and erratic
- kinetic energy
passive transport correct answers movement driven by concentration/pressure differences
- equalizes gradient
active transport correct answers cell provides energy to power movement
Diffusion correct answers movement of molecules from region of higher concentration to lower
concentration
- driving force is kinetic energy
potential energy correct answers stored energy
(molecules want to move with the concentration gradient = high potential energy)
simple diffusion correct answers unassisted diffusion of solutes through the selectively
permeable membrane
