8.1 Study Guide

Question 1

The procedure of the griffith experiement

Answer 1

Mice were injected with different combinations of pneumoniae bacteria. S strain and Non-virulent R strand with rough capsule.

Question 2

Procedure of Avery, McLeod, and McCarty

Answer 2

Isolated different components from heat-killed s train bacteria treating them with specific enzymes to destroy different macro molecules like proteins, RNA and DNA.

Question 3

Procedure of Hersey and chase experiement

Answer 3

It was very similar to the Griffith experiment but they tested radioactive phosphorus and radioactive sulfur. The bacteria with phosphorus entered the bacteria cell showing DNA represented DNA genetic material.

Question 4

Parts of a nucleotide

Answer 4

Nitrogen base. phosphate group, sugar molecule, DNA and RNA

Question 5

The structure of a DNA model

Answer 5

Double helix, sugar phosphate backbone, form anti-parallel, two stands of nucleotide, held together by hydrogen bonds.

Question 6

Smilarites and Differences of DNA and RNA

Answer 6

RNA is single stranded while DNA is double stranded, both nucleic acids

Question 7

Analyze the Griffith experiement

Answer 7

R strain bacteria had been transformed by S strain bacteria

Question 8

Analyze the Avery, McLeod and McCarty experiment

Answer 8

Proved DNA is the genetic material

Question 9

Analyze the Hersey and Chase experiment

Answer 9

Proved DNA, not a protein, is genetic material by proving how DNA directs the production of new viruses.

Answer 10

Sulfur marks proteins and phosphate is in DNA