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WorksheetsDNA Structure
Total questions: 25
Worksheet time: 21mins
molecule that carries genetic information in living organisms
(a)
Roles of the genetic material:
“A genetic material must carry out two jobs: duplicate itself and control the development of the rest of the cell in a specific way.”
who said this?
(a)
According to Francis Crick, what are the roles of the genetic material
duplicate itself
control the development of the rest of the cell in a specific way
transcribe itself
translate itself
1860, foundation of genetics through pea plant experiments, establishing the laws of inheritance
(a)
1871, isolated nuclei from pus and identified nuclein later called nucleic acid
(a)
1902, chromosomes as carriers of genetic information
- transforming principle = nucleic acid later DNA
Walter Sutton
Theodor Boveri
Friedrich Miescher
Avery MacLeod
their experiments provided strong evidence that DNA is the carrier of genetic information and DNA is the molecule of heredity
Avery, MacLeod, and McCarty
Walter Sutton and Theodor Boveri
Hershey and Chase
Levene and Miescher
he discovered the structure of DNA
(a)
he discovered that a "transforming principle" could pass genetic information from one bacteria to another
(a)
Major distinction: RNA contains ribose, DNA contains (a)
3 parts of nucleic acid:
one nucleotide is composed of:
sugar
nitrogen-containing base
phosphorus-containing component
dna
DNA IS A CHAIN OF NUCLEOTIDES.
true
false
- a type of organic molecule with a two-ring structure
- adenine and guanine
(a)
- a type of organic molecule with a single-ring structure
- cytosine and thymine (and uracil)
(a)
The two opposing orientation of the two nucleotide chains in a DNA
molecule is called (a)
who made the rule:
no. of adenine = no. of thymine
no. of guanine = no. of cytosine
(a)
“X-ray diffraction indicated DNA has a
repeating structure.”
Walter Sutton and Theodor Boveri
Maurice Wilkins
and Rosalind Franklin
James Watson and
Francis Crick
“DNA is double-stranded molecules wound
in a double helix.”
James Watson and
Francis Crick
Maurice Wilkins
and Rosalind Franklin
Frederick Griffith
Friedrich Miescher
(a) between paired bases hold the two DNA strands together.
A sugar and phosphate
“backbone” connects nucleotides in a chain
true
false
The double-stranded, helical structure of DNA gives it great strength (a) times the strength of single-stranded DNA, which would not form helix.
The directionality of a DNA strand is due to the orientation of the phosphate-sugar backbone.
true
false
The DNA of the smallest human chromosome if stretched is (a) millimeters long.
The protein (or functional RNA) creates the phenotype.
true
false
Meselson and Stahl Experiment Conclusion: replication is (a)
