Limits to Cell Growth
Cell Cycle
Mitosis
Regulating Cell Growth
Stem Cells
100
The cells of a baby and adult are the ___________ size
same
100
What is the series of events that happen as a cell grows and divides?
cell cycle
100
What is the part of eukaryotic cell division during which the cell nucleus divides?
mitosis
100
What is a protein that regulates the timing of the cell cycle?
cyclin
100
What do you call unspecialized cells that have the potential to differentiate?
stem cells
200
Name two things that cells need to take in and two things that they need to get rid of:
IN--> nutrients, O2, water OUT--> wastes, CO2
200
Name the events of the cell cycle in correct order.
G1, S, G2, M
200
Phase of mitosis where all the chromosomes line up at the equator of the cell.
metaphase
200
What is the disease where the body's own cells lose control of cell growth?
cancer
200
What two types of stem cells are controversial because of where they are harvested from?
embryonic and fetal stem cells
300
What are the two limits to cell growth?
DNA overload (info crisis) and transport issues
300
What important process happens during the "S" phase of the cell cycle?
synthesis or replication of DNA
300
Name the phases of mitosis in correct order:
prophase, metaphase, anaphase, telophase
300
Rapid, uncontrolled growth of cells causes them to pile up and form a __________.
tumor
300
Name three possible uses of stem cells.
repair injuries, cloning, grow organs/tissues, diabetes, Alzheimers, Parkinsons, arthritis, heart disease, strokes, burns, brain/spinal injuries
400
What happens to the surface area to volume ratio as the cell grows?
it decreases (gets smaller)
400
What is another name for the G1, S, & G2 phases?
interphase
400
What term refers to the division of the cytoplasm where the cell actually divides into two daughter cells?
cytokinesis
400
What type of cancer is more dangerous because cells can break off and spread to other parts of the body.
malignant (metastasis)
400
Name the three general types of stem cells based on potency:
totipotent, pluripotent, multipotent
500
What is the surface area, volume, and ratio (SA:V) of a cell that is 3cm x 3cm x 3cm?
SA= 54cm2 V=27cm3 Ratio= 2:1
500
An off branch of the cell cycle where the cell specializes and will never divide again.
G0
500
What phase of mitosis is the longest?
prophase
500
Name three ways in which cancer can be treated.
surgery, chemotherapy, radiation, biological (gene) therapy
500
What do you call a cell that has been "reprogrammed" so that they behave like an embryonic stem cell?
iPS (induced pluripotent stem) cell
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