Cell Size and Surface Area
If my surface area is 6cm and my volume is 2cm, what is my surface area to volume ratio?
3:1
What is the longest phase of mitosis?
Prophase
What is the longest phase in the cell cycle?
Interphase
What happens during the S phase?
DNA replication/duplication
One chromosome consists of ____________?
TWO Chromatids
True or False: The larger a cell gets, the easier it is to get things in and out of the cell.
False
What forms in prophase?
AND
What disappears in prophase?
The chromosomes!
AND
Nucleus
The cell cycle results in 2 genetically _______ cells.
Identical
Can cells always repair themselves?
No! It depends on the type of cell
What is a cluster of cells growing uncontrollably called?
Cancer
True or False: The lower the surface area to volume ratio, the harder it is for nutrients to go in and out of the cell.
True
True or False: Cytokinesis is the division of the cell nucleus
False!
What are the four phases of the cell cycle in order?
G1, S, G2, M
Is the nuclear membrane still intact during interphase?
What is the structure that connects the 2 chromatids together?
Centromere
Is a 6:1 or 3:1 ratio more efficient/productive in size for a cell?
6:1 - a larger difference in ratio is equal to a smaller sized cell
What is spindle and why is it important?
Spindle attaches to the centromere of a chromosome and divides the chromosome in half.
What is the importance of the cell cycle in multicellular organisms? AKA what does the cell cycle do for organisms?
During interphase, DNA has replicated and appears as a loosely coiled mass known as ____________.
Chromatin
How long does it take for an average human cell to divide and grow?
About 20 Hours
Why is the surface area to volume ratio important in a growing cell?
A. A cell can only get so large
B. The larger a cell gets, the harder it is to get things in and out
C. If a cell is too big, its needs cannot be supported
What is the final product of mitosis?
True or False: the chromosomes duplicate in G2 phase
False - they duplicate in S Phase
What gets duplicated in S phase?
DNA, Chromosomes, etc.
How do the Cell Cycle and Mitosis differ?
Cell Cycle is G1, S, G2
Mitosis is PMAT