DNA Structure
What molecule stores genetic information?
DNA
One DNA molecule is replicated to create how many new strands?
2
shape of DNA
double helix
What is the name of the relationship between organisms when both species benefit?
Mutualism
which enzyme unzips
helicase
What is the shape of DNA?
spiral, double-stranded, ladder like
the sequence of nitrogen-based in 2 replicated DNA strands is what?
identical!
What are the building blocks called that makeup DNA?
Nucleotides
List 3 out of the 5 characteristics of life
Cells, DNA, life cycle, metabolism, homeostasis
Which enzyme pairs bases and proofreads
DNA polymerase
Define a GENE
a section of DNA
What bond holds together the two opposite strands of the DNA molecule?
Hydrogen bond
What is the name of the enzyme that "unzips" the DNA strands during DNA replication
A ripe apple on a tree produces the chemical ethylene. This chemical causes the surrounding apples to ripen, and in turn, this produces more ethylene until all of the apples on the tree are ripe.
positive feedback loop
What is the purpose of ligase
attach sugar to phosphate
What are the three parts of a nucleotide?
Phosphate group, sugar group, nucleotide base (nitrogen group)
What are the 3 steps of DNA Replication?
1. helicase unzips the two DNA strands
2. The nucleotide base pairs match up
3. Ligase reconnects the two strands
Write the corresponding sequence of base pairs to this strand below:
AAG TCG CAT
TTC AGC GTA
draw the pyramid on the board - 4 levels
The bottom of the pyramid contains 12,300 Kcal. Complete the 10% for each level to see how many Kcal are transferred from each level to the next.
What is the purpose of topoisomerase?
unwind DNA