Cell Size
The most efficient size for a cell
What is a small cell
Sister chromatids are connected at this location
What is the centromere
Most of the cells in your body are in this phase 75%-90% of the time
What is Interphase
What part of the mitotic phase is the actual division of the cell into two separate cells
What is cytokinesis
Proteins that regulate the timing of the cell cycle
What is cyclin
The smaller the cell, the _______ its surface area to volume ratio.
What is larger
Combination of DNA and proteins called histones
What is chromatin?
T or F: A normal sized cell is ready to divide.
False, the cell needs to grow before dividing
Describe the location of the chromosomes during metaphase
Lined up in the middle
The process of programmed cell death or 'self destruction'
What is apoptosis
Surface area is to exchange, as _______ is to transport.
What is volume
DNA wrapped around eight histones is called _______
What are nucleosomes
This phase copies the DNA
What is the S phase?
The phase where the nuclear envelope begins to disappear
What is prophase
These regulatory proteins respond to events outside the cell such as a cut
What are external regulators
What cells do to increase their surface area
What is divide
Prokaryotes have a circular strand of DNA. What is the cell division in prokaryotes called?
What is binary fission
Growth occurs in both G1 and G2 phases, what occurs in G2 phase that does not occur in G1?
What is identical
This type of regulator would make sure spindle fibers are attached to the centromere during metaphase inside the cell
What are internal regulators
Why do 27 1-unit cells have more surface area than 1 3-unit cell
If stacked in a 3-unit formation, the 1-unit cells have the same amount of surface area PLUS the inside cube's surface areas
To precisely separate the DNA equally into two daughter cells
During interphase DNA in the cell appears as _____
Mitosis ONLY includes these phases IN ORDER
Prophase, Metaphase, Anaphase, and Telophase
Give one reason a cell would not be able to divide.
DNA not replicated, no growth, organelles are not duplicated