Download presentation
Presentation is loading. Please wait.
Published byЈасмила Михајловић Modified over 6 years ago
1
MEN only can 1963 Nobel Prize winners win the Nobel prize Wilkins
Franklin Crick Watson
2
new- clee - oh - tide nucleotide
3
Why do offspring resemble their parents?
The offspring have copies of the parents’ chromosomes Chromosomes contain sets of instructions Those instructions are called GENES Genes are made up of DNA Why do offspring resemble their parents?
4
In what year was DNA finally concluded to be genetic material?
1944 HINT: D-Day: This is the U.S. Coast Guard at Normandy
5
the three parts of a NUCLEOTIDE?
5-carbon sugar molecule (deoxyribose) Phosphate the three parts of a NUCLEOTIDE? Nitrogen base
6
The letters DNA stand for what words?
Deoxyribonucleic acid
7
4 different NITROGEN bases
Adenine Thymine
8
Guanine cytosine
9
Class of organic molecules for ADENINE and GUANINE
Purines [pure-een] LARGE
10
Class of organic molecules for thymine and cytosine
Pyrimidines py·rim·i·deen SMALL
11
Purines have how many rings of carbon and nitrogen atoms?
2
12
Pyrimidines have how many rings of carbon and nitrogen atoms?
1
13
A T Thymine always goes with Adenine Cytosine always goes with Guanine
Base-pairing rule T A Thymine always goes with Adenine Cytosine always goes with Guanine C G
14
Watson, Crick and Wilkins
3 scientists who won the Nobel Prize by understanding the 3-deminsional structure of DNA Watson, Crick and Wilkins 1953………Nobel Prize in 1962
15
Only males were allowed in the university dining rooms, and after hours Franklin's colleagues went to men-only pubs. Rosalind Franklin
16
Describe a double helix
Spiral staircase
17
In the DNA structure of the ‘twisted ladder’ (spiral staircase) the rungs are held together by what bond? HYDROGEN
18
The process of making a new DNA strand is called
REPLICATION
19
Before REPLICATION can begin
The double helix must be UNWOUND
20
The UNWINDING of the DNA strand is accomplished by
ENZYMES called HELICASES
21
Differences between DNA and RNA
2 strands of nucleotides Single strand of nucleotides 5-carbon sugar deoxyribose (‘de’ means without an OH) 5-Carbon ribose (sugar) thymine Uracil
22
Now you try it Draw 5 pairs of nucleotides, labeling each part.
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.