LATEST UPDATED 2025 REAL FINAL EXAM WITH COMPLETE
DETAILED QUESTIONS AND CORRECT VERIFIED ANSWERS
ALREADY A+ GRADED
Lesson 1: Foundations to Set the Stage
ANSWER-Focusing on Cellular Structure and Function
The Normal Cell Cycle
ANSWER-The cell cycle refers to the ordered seres of processes of DNA replication and mitosis, or cell
division
-Cell nucleus regulates these processes by gathering and processing complexes molecular information
Interphase and Mitotic Phase
ANSWER-Cell division produces two identical cells through these two major phases
During interphase:
ANSWER-Cell grows and DNA is replicated through the following three steps:
,1: First growth phase (G1 or first gap)
2: Synthesis phase (S phase)
3: Mitotic Phase (M phase)
First Growth Phase (G1 or first gap)
ANSWER-cells increase in size
-reproduce RNA
-"quality assurance" test that the cell will be ready to synthesis DNA
-Length of time is variable, can be from hours to days
Synthesis Phase (S phase)
ANSWER-DNA replicates
-Results in the formation of identical pairs of DNA (chromatids)
-which are attached a t the centromere
,-lasts 2-10 hours
Mitotic Phase (M phase)
ANSWER-Replicated chromosomes are aligned, separated, and move into 2 new, identical daughter cells
-takes about 30-60 minutes
Major points of cell regulation are entry and exit from
ANSWER-G1 checkpoint
-S Phase
-G2 checkpoint
-M phase
Restriction Point
ANSWER-The transition from the resting phase into an actively dividing phase (G0-G1) is a point where
cellular transformation can occur
-During this time, cells pass through a transition phase known as a restriction point
, -Extracellular growth factors trigger reentry into G1, and GF are required to send the cells past the
restriction point, or the point of no return
G0 Phase (resting phase)
ANSWER-After mitosis, cells may enter back into the G1 phase or go into a resting phase, known as G0
-Most cells in the human body reside in G0
-Exceptions to this are those that are (Resting in G0 phase)
-Exceptions to this are those that are metabollically active, such as
-granulocytes
-and the epithelium of the GI tract
Cell Cycling Time
ANSWER-Amount of time from mitosis to mitosis
Cell cycle video and image
ANSWER-
http://highered.mheducation.com/sites/0072495855/student_view0/chapter2/animation__how_the_c
ell_cycle_works.html