DNA Flashcards

(68 cards)

1
Q

What does DNA stand for

A

DexoxyriboNucleic Acid

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2
Q

What is DNA made up of

A

DNA is made up of monomers called nucleotides

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3
Q

Whats a monomer

A

a molecule that can be bonded with other IDENTICAL molecules (forms polymer)

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4
Q

What is the function of DNA

A

store genetic material

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5
Q

What are the 4 types of nucleotide (letters)

A

A, T, C, G

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6
Q

What does the structure look like (DNA)

A

2 strand in a double helix

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7
Q

Are the hydrogen bonds weak or strong

A

weak

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8
Q

What are examples of a helix

A

spiral staircase, corkscrew

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9
Q

Go to slide 8: Whats A

A

Adenine

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10
Q

Go to slide 8: Whats B

A

thymine

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11
Q

Go to slide 8: Whats C

A

cytosine

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12
Q

Go to slide 8: Whats D

A

guanine

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13
Q

Where is DNA located/ packaged

A

Chromosomes

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14
Q

When chromosomes un-condense do they have to undo all of the chromosome

A

No, they can just take a section

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15
Q

Deoxyribonucleic Acid. Stores genetic information (Name)

A

DNA

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16
Q

An enzyme that separates DNA strands

A

DNA Helicase

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17
Q

This enzyme builds the new DNA strands using the old strands as a template.

A

DNA polymerase

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18
Q

The building blocks of DNA. Made up of a sugar-phosphate backbone and a nitrogenous base.

A

Nucleotide

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19
Q

DNA replication is called —— because the new DNA molecules contain one original strand and one new strand

A

Semiconservative

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20
Q

States that the amount of A always equals the amount of T nucleotides and amount of C = G

A

Chargaffs rule

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21
Q

——- are proteins that DNA coils tightly around ​​​​​​​

A

Histones

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22
Q

What are the 4 nucleotides in DNA (words)

A

Thymine, Cytosine, Adenine, Guanine

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23
Q

What are the 4 nucleotide in RNA

A

Uracil, Cytosine, Adenine, Guanine

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24
Q

What year was DNA confirmed as as the hereditary genetic material

A

1952

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25
What did Chargaff state
Amount of A always equals amount of T and C always equals the amount of G
26
Name 2 things Watson and Crick did
- Built models using Chargaffs and Franklin data - proposed double-helix structure with base parings between two DNA stands
27
Who Took X-ray crystallography photos of DNA.
Franklin
28
What was Rosalind Franklin skilled at
crystallography
29
Was Rosalind Franklin taken seriously
No
30
What happened to Franklin's famous photo 51
it was given to Watson without her permission
31
When did Rosalind Franklin die
1958 at 37
32
Why is it believed that Franklin died
From working with X-rays, she had ovarian cancer
33
Describe the events surrounding the Nobel peace prize in 1962
-Franklin's photo 51 was given to Watson without her permission - Franklin died - Watson and Crick won the Nobel peace price (from photo 51) - Franklin was not credited for her work
34
What hold one strand of DNA together (molecule)
Phosphate and sugar form the phosphate sugar backbone which holds one strand of DNA together
35
What creates the genetic code for DNA
Nitrogen base
36
What does the nitrogen base do for the structure
The base connects with the opposite strand of DNA to hold the two strands of double helix together
37
What holds each strand together with strong covalent bonds
Phosphate- sugar backbone
38
What connects two stands with hydrogen bonds
Nitrogen base pairs
39
What are the DNA base paring rules (letter pairing)
A and T C and G
40
When is there one full turn DNA
every 10 base pairs
41
What cell in your body contains an identical copy of your DNA on 46 chromosomes.
All
42
When DNA is stretched out is it a short or long distance
long as a football field
43
If guanine makes up 15 percent of the bases in a specific DNA molecule, what percentage of the bases are cytosine
15%
44
Cytosine always pairs with
Guanine
45
The two men who established the structure of DNA were
Watson and Crick
46
The "rungs" of the DNA ladder are made of
Base pairs
47
Adenine always pairs with
thymine
48
An enzyme that separates DNA strands
Helicase
49
A Y shaped point that results when the two strands of DNA double helix separate so that the DNA molecule can be replicated
Replication Fork
50
An enzyme that catalyzes the formation of the DNA molecule
DNA polymerase
51
In each DNA double helix, one strand is from the original molecule, and one strand is from the new
Semi-Conversation replication
52
A change in the nucleotide-base sequence of a gene or DNA molecule
Mutation
53
Is DNA the shape of a twisted ladder called a double helix.
yes
54
Does DNA have two strands that form a branched chain called a branched helix.
NO
55
Go to slide 10: Whats A
Phosphate group
56
Go to slide 10: Whats B
Sugar
57
Go to slide 10: Whats C
Nitrogenous base
58
The twisted ladder shape of DNA is called
Double Helix
59
What Complements T
A
60
The sugar found in DNA is called
dexoyribose
61
Go to slide 11: What is the arrow pointing to
a (nitrogen) Base
62
A nucleic acid chain, a subunit that consists of sugar, a phosphate, and a nitrogenous base
nucleotide
63
A five carbon sugar that is a component of DNA nucleotides
dexoyribose
64
An organic base that contains nitrogen such as purine or pyrimidine, a subunit of nucleotide in DNA or RNA
Nitrogenous bases
65
Adenine or guanine a nitrogenous base found in DNA or RNA
Purine
66
thymine, cytosine or uracil, nitrogenous base found in DNA or RNA
Pyrimidine
67
The rules that cytosine pairs with guanine and adenine pairs with thymine in DNA and that Adenine pairs with uracil in RNA
Base Pairing rule
68
The DNA molecule is held together by
Hydrogen bonds