Cell Cycle And Mitosis Flashcards
0
Q
The number of chromosomes in a eukaryotic cell depends on..
A
The species
1
Q
How many genes do humans have?
A
Around 25,000
2
Q
What are chromosomes made up of?
A
Chromatin
3
Q
What is chromatin?
A
Combination of DNA and protein molecules
4
Q
What is a histone?
A
Small protein found only in eukaryotes
5
Q
At the first level of DNA packing….
A
Histones attach to DNA
6
Q
Each nucleosome consists of DNA wound around….
A
Histone molecules
7
Q
At the second level of DNA packing…
A
The combination of DNA and Histones is wrapped into a tight helical fiber.
8
Q
The rate at which a cell divides depends on its ______ within the organism’s body
A
Role
