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Cell and heredity chapter 3
who cares...... urrrrggggggg
9
Science
7th Grade
01/18/2012

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Cards

Term
In a unicellular organism, what is cell division involved in?
Definition
reproduction
Term
becides reproduction, name 3 functions of cell division
Definition
growth, devolopment, repaair
Term
what does DNA stand for
Definition
deoxyribonucleic acid
Term
who created the first model of DNA? What does it look like?
Definition
Watson and Crick
Double Helix/ twisted ladder
Term
What does DNA exsist during most of the life cycle?
Definition
a massive loose strand
Term
What is a chromosome?
Definition
DNA becomes wrapped around proteins like thread around a spool. The DNA is then further compacted into structures
Term
What happened to chromosomes before cell division occurs?
Definition
they compact ans become visable to a light microscope
Term
How are chomatids held together?
Definition
with a centromere
Term
How many chromsomes are in a Fruit fly?
Human?
Corn Plant?
Definition
Human 46
Fruit Fly 8
Corn Plant 20
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