10-1/10-2/10-3/10-4 Flashcards Preview

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Flashcards in 10-1/10-2/10-3/10-4 Deck (18):
1

Bacteriophage

Viruses that infect bacteria

2

Hershey's and chase experiment led to the conclusion that

DNA is the hereditary molecules in viruses

3

DNA can transform bacteria to one organism to another

4

Transformation

Transformation of genetic material from one organism to grow to the next

5

Griffith's experiment included...

1. Injecting the mice with R and the mice being able to fight it off. Injecting the mice with S and the mice not being able to fight it off.

2. Wanted to to kill the S strain, heated up the S and injected it in too the mice. The bacteria couldn't do anything and then the mice was fine.

3.injected the mice with R and then injected the mice wth the heated up S and something happened, the DNA transformed the S back.

6

Oswald Avery and is colleagues showed that...

1. Figured out that when the S Bacteria was killed there DNA was still there witch got picked up the bad Bacteria causing it to transform into bad Bacteria.

2. Avery and Griffith used mice and bacteria, and that they figured out that DNA and Bacteria is a transforming agent.

7

Hershey and chase give...

1.Radioactive elements to viruses, viruses ended up have this protein coat that had radioactive sulfur.

2.They took this viruses and gave it to E. coli and they wanted to see what would be passed on. There was No Radioactive sulfur, there was only radioactive phosphorous witch meant the DNA is the hereditary material for viruses.

8

Purine

A pair of nitrogenous bases connected by hydrogen bonds.

9

Nitrogenous base

Contains nitrogen atoms and carbon (c) atoms that is a base

10

The primary function of DNA in cells is to

Store information that tells the cells with proteins to make.

11

The two strands of DNA molecule are held together by

Hydrogen bonds

12

According to the base- pairing rules, guanine binds with

Cytosine

13

Which of the following is not a correct structure of a nucleotide

Adenine- ribose- phosphate

14

The percentage of adenine in DNA is

Equal to the percentage of thymine

15

What are the 3 parts of a DNA nucleotide, and how are they connected to each other.

-Deoxyribose sugar, A nitrogen base, A phosphate group

- The phosphate and base are connected to differ parts of the sugar

16

If 15% of the nucleotides in a DNA molecule contain guanine, what percentage of the nucleotides contain each of the other three bases

15% Because there all equal

17

Why is complementary base pairing important in DNA structure

The hydrogen bonds between the base is holding the two strands of DNA together and because it serves as a way for DNA to replicate.

18

How did X-Ray diffraction photographs help Watson and crick determine the structure of DNA

Is showed that is was a double helix and gave hints about structure