LECTURE 1 Flashcards
Which statement describes either the (a) experimental design or (b) the findings of the Hammerling experiment?
Amputation of caps and feet, there is hereditary information within the nucleus.
Which statement describes either the (a) experimental design or (b) the findings of the Robert Briggs and Thomas King experiments?
Tadpoles, as long as there is a nucleus inside, you can grow.
Which statement describes either the (a) experimental design or (b) the findings of the Griffith experiment?
Mice, hereditary information and transformation.
What is the definition of transformation (when referring to bacteria)?
the transfer of genetic material from one cell to another
According to the video Griffith Experiment: Bacterial Transformation, what is the difference between the coating on the virulent S-strain and the A-virulent R-strain?
One has a polysaccharide coat. (S-Strain has polysaccharide coat).
According to the video Griffith Experiment: Bacterial Transformation, what happened to each mouse within the (a) live R-strain group , (b) live S-strain died, (c) heat-killed S-strain lived, or (d) heat-killed S-strain mixed with a live R-strain?
(A) Lived
(B) Died
(C) Lived
(D) Died
Which statement describes either the (a) experimental design or (b) the findings of the Avery experiments?
Streptococcus pneumoniae
Which statement describes either the (a) experimental design or (b) the findings of the Hershey-Chase experiments?
Confirmed DNA was genetic material. Injected virus into bacteria (bacteriophages).
DNA is made up of long chains of nucleic acids. Which statement does not describe the components of nucleic acids described in class?
-a five-carbon sugar -a phosphate group -a nitrogenous base (purine or pyrimidine) -nucleotide
Which statement accurately describes any information we discussed regarding nucleic acid bonds or direction regarding bonding (think the prime direction we discussed)?
Phosphodiester bonds make up your DNA. 5’ to 3’ process.
Which statement accurately describes the findings of the Chargaff’s analysis regarding DNA nucleotides?
Guanine should = cytosine and adenine should = thymine.
Which statement describes either the (a) experimental design or (b) the findings of Franklin’s experiments?
That DNA was the shape of a double helix or corkscrew.
Watson and Crick were the first to make a full model of DNA and found the reasoning why our DNA is a double helix. Which of these statements does not accurately describe these discoveries?
To show base-pairs.
Watson and Crick discovered that DNA has complementary base-pairs. What does this mean?
The standard arrangement has a pairing that is opposite.
Regarding DNA replication, three models showing how it was completed were originally theorized until scientists realized it matched the semiconservative model. Which of these statements describes the three originally theorized conservative, dispersive, or semiconservative models of DNA replication?
DNA is semiconservative, but dna was thought to be conservative: one entirely new molecule and conserves the old
