CHEM 210 LATEST
BIOCHEMISTRY -
MODULE 6
in a DNA helix two polynucleotide chains run in ________ directions
held in place by ________bonds
opposite
hydrogen
The two chains are not identical, but they are __________
complementary
what is the binding of dna bases
A-T
C-G
The double helix formed by the anti-parallel chains has a repeating
structural fold that includes a _________ groove and ________
groove
major
minor
A and T bases form _______hydrogen bonds and G and C form
_______, which means G and C are held together more tightly.
2
3
What is the Z form of DNA?
END OF
PAGE
1
, CHEM 210 LATEST
BIOCHEMISTRY -
MODULE 6
left handed helix with zig zag backbones
what is a-form of dna
right handed double helix, ladder-like
What is the B form of DNA?
right handed double helix
what is the function of dna
store genetic information
What is a gene?
chromosomal segment of DNA that codes for a protein
What is a codon?
a three-nucleotide sequence that codes for an amino acid
What are the 3 types of RNA?
mRNA
tRNA
rRNA
What is mRNA?
messenger RNA carries the DNA message from the nucleus to the
ribosomes
END OF
PAGE
2
BIOCHEMISTRY -
MODULE 6
in a DNA helix two polynucleotide chains run in ________ directions
held in place by ________bonds
opposite
hydrogen
The two chains are not identical, but they are __________
complementary
what is the binding of dna bases
A-T
C-G
The double helix formed by the anti-parallel chains has a repeating
structural fold that includes a _________ groove and ________
groove
major
minor
A and T bases form _______hydrogen bonds and G and C form
_______, which means G and C are held together more tightly.
2
3
What is the Z form of DNA?
END OF
PAGE
1
, CHEM 210 LATEST
BIOCHEMISTRY -
MODULE 6
left handed helix with zig zag backbones
what is a-form of dna
right handed double helix, ladder-like
What is the B form of DNA?
right handed double helix
what is the function of dna
store genetic information
What is a gene?
chromosomal segment of DNA that codes for a protein
What is a codon?
a three-nucleotide sequence that codes for an amino acid
What are the 3 types of RNA?
mRNA
tRNA
rRNA
What is mRNA?
messenger RNA carries the DNA message from the nucleus to the
ribosomes
END OF
PAGE
2