DNA Flashcards
DNA stands for…
Dioxyribo
Nucleic
Acid
What are the 3 main parts of a nucleotide?
Phosphate group
Deoxyribose sugar
Nitrogen Base
DNA structure largest to smallest: Cell, nucleus…
Chromosome, DNA, gene,nucleotide
Where is DNA located?
Within a chromosome which is located in the nuclei of all cells (except red blood cells)
Long, thin, threadlike structures found in the nucleus of cells. They are made up of DNA and protein:
Chromosomes
Sections of DNA that carry the genetic code for a particular characteristic:
Genes
DNA strands are bound to proteins called:
Histones
What is the difference between a Chromatin and a Chromosome?
Chromatin is a tangled network of DNA, and the cell isn’t dividing, Chromosome is tightly coiled, and the cell is dividing.
What forms the uprights of the DNA ladder?
Sugar and Phosphate
DNA ladder rungs are made up of __________ pairings
Complementary base
The genetic code is made by….
The order of bases along a DNA strand
Why does DNA need to replicate before cells divide?
Ensures that every daughter cell gets a copy of the genome, fully inheriting genetic traits.
Enzyme:
Primase role?
Tells polymerase where to work
Helicase role?
Unzips the 2 strands of DNA
Ligase role?
Glues DNA fragments together
