This level of biological classification exists above that of Kingdom.
What is domain?
100
This enzyme opens up the DNA double helix in preparation for replication.
What is helicase?
100
This strand of DNA is copied continuously.
What is the leading strand.
100
The mechanism by which huge amounts of DNA is twisted into a tiny nucleus.
What is supercoiling?
200
Maurice Wilkins betrayed his lab partner, Rosalind Franklin, by showing James Watson this, which she had collected in the lab via x-ray crystallography.
What is her photograph of a DNA molecule?
200
Objects in space moving away from us present us with a light spectra that is shifted toward this end of the spectrum.
What is red?
200
This enzyme is responsible for proofreading DNA replication.
What is DNA polymerase?
200
Segments of DNA copied from the lagging strand that need to be joined together.
What are Okazaki fragments?
200
These form the rails of the DNA ladder.
What are the phosphate-sugar backbones?
300
The last name of the person who discovered that # G=C and # T=A in all organisms.
What is Chargaff?
300
This is the thermal energy leftover from the Big Bang.
What is the Cosmic Microwave Background Radiation?
300
This enzyme synthesizes short primers on DNA templates in order to initiate replication.
What is RNA primase?
300
These are the bases found in both DNA and in RNA.
What are Adenine, Cytosine, and Guanine?
300
These are proteins around which DNA loops twice.
What are histones?
400
They worked with bacteriophage to determine that DNA, not protein, was the hereditary material.
Who are Hershey and Chase?
400
This is the percent of radioactive parent isotope remaining after 5 half lives.
What is 3.125%?
400
This enzyme relaxes DNA supercoils ahead of the replication fork, to prevent stress due to opening up the molecule.
What is topoisomerase?
400
The type of replication that takes place on the lagging strand.
What is discontinuous?
400
This is the deoxygenated atom that distinguishes the sugars in DNA and RNA.
What is the Number 2 carbon?
500
Hershey and Chase radiolabeled proteins with this radioactive element and DNA with 32-P.
What is 35-S?
500
Daily Double
Step 3 of the Chemical Evolution of Life Hypothesis is the formation of these membrane-enclosed sacs of molecules that capture energy, concentrate materials, and engage in metabolism.
500
Polymerase adds free nucleotides to this open end of a growing DNA molecule.
What is the 3' end?
500
This refers to each parent strand being incorporated into a new DNA double helix during replication.
What is semi-conservative replication?
500
The number of hydrogen bonds in this sequence and its complement, plus the number of base pairs: A-T-A-G-T-C-C-A-A-G.