DNA BASICS
What does “DNA” stand for?
Deoxyribonucleic Acid
A relatively weak bond that forms between the two nitrogen bases holding the two sides of the DNA molecule together.
Hydrogen Bond
What term describes the structure of the cell membrane in the image about to be shown?
Phospholipid Bilayer
Mitosis is the division of the…
nucleus
“The Most Beautiful Experiment” which was lead by Meselson and Stahl, proved…
The semi conservative theory of DNA replication-one new strand and one original
Nucleus
Name the three components of the nucleotides that compose DNA.
One sugar molecule, one nitrogen base, one phosphate group
Selective Permeability describes the idea that….
Only some substances can pas through a membrane
During which phase of mitosis are the sister chromatids aligned at the center of the cell?
Metaphase
One side of a DNA strand has the following sequence. What is the complimentary sequence found on the opposite side?
TCAGCA
AGTCGT
____ used the process of X-ray diffraction to ”look” at DNA._____ are the two men that looked at the above x-rays to determine the structure of the DNA molecule.
Rosalind Franklin
Watson and Crick
DNA has a unique two-sided, spiraling shape. What is the name given to this shape?
Double Helix
What is active transport?
A form transport that requires energy (___) to move molecules agains the concentration gradient.
At which phase of mitosis are the chromatids separating and moving toward the poles of the cell?
Anaphase
The process of one strand of DNA making one strand of RNA is…
Transcription
What are the building blocks (monomers) that compose DNA and RNA?
Nucleotides
Name the four nitrogen bases.
What are the base pairing rules?
Adenine
Cytosine.
Guanine
Thymine
The base pairing rules are: A-T and C-G
Osmosis, Diffusion and Facilitated Diffusion are examples of which type of transport? Passive or Active?
Passive
What occurs during the S phase of the cell cycle?
DNA Replication
An enzyme that untwists the double helix of DNA at the replication forks, separating the two strands and making them available as template strands.
Helicase
In any sample of DNA, the amount of adenine is equal to the amount of thymine, and the amount of cytosine is equal to the amount of guanine. This is known as?
Chargaff’s Rule of base pairing
The direction of the two strands of DNA is described with the term
Antiparallel
Which type of solution has
a lower solute concentration
than a cell?
HYPOTONIC
In which phase of mitosis do we see the nuclear membrane reform?
Telophase
An enzyme responsible for the addition of new nucleotides along the daughter strand during replication of DNA.
DNA Polymerase