Cell Growth & Division Flashcards

Terms	Definitions
by adding new cells	When living things get larger, it is by adding new cells or by making their existing cells larger?
diffusion is slow and wouldn't work well on large cells	Why are most cells so small, even when they are found on large plants and animals?
interphase	What is the name for the time period in-between cells divisions?
about 90%	What percent of a cell's normal life is spent in-between cell divisions?
chromosomes carry all the information for the cell's life processes	Why is it so important that the two new daughter cells have exactly the same number and kind of chromosomes as the original cell?
16 because the chromosomes have made copies of themselves	If a fruit fly has 8 chromosomes in its normal cells, how many chromosomes would it have at the beginning of mitosis?
8 chromosomes in each daughter cell	If a fruit fly has 8 chromosomes in its normal cells, how many chromosomes would each of the daughter cells have at the end of mitosis?
chromatids	What is the name of the two identical pieces of chromosomes in Prophase?
centromeres	What is the name of the attachments near the middle that hold the two pieces of chromosomes together?
metaphase	Identify the pictured phase of mitosis ...
prophase	Identify the pictured phase of mitosis ...
telophase	Identify the pictured phase of mitosis ...
anaphase	Identify the pictured phase of mitosis ...
the division of the cytoplasm and other cell organelles	What is cytokinesis?
chemical proteins that can start or slow down cell division	What are cyclins?
severe uncontrolled cell division	Describe cancer.
they squeeze other cells and cut off their blood supply	How do tumors cause problems in the body?
benign tumors are harmless. malignant tumors contain cancer cells.	What is the difference between a benign and a malignant tumor?
a tissue small of a tumor that is grown in the lab to determine if it is benign or malignant	What is a biopsy?
metastasize	When cancer cells break off from tumors and migrate to other areas of the body, it is known as ....
stem cells	What is another name for undifferentiated or unspecialized cells?
from embryos, from bone marrow and also from the umbilical cord	Name two places where stem cells are collected.
stem cells might be directed to replace damaged or diseased cells.	Why does stem cell research sound so promising?