Bio 2 chapter 12 and 13
Why is only one strand of DNA transcribed into mRNA
Because transcribing both DNA strands would produce different amino acid sequences.
In essentially all organisms, the AUG codon codes for:
the initiation of translation.
Ribose differ from deoxyribose by having
An extra hydroxyl group
The DNA strands that is replicated smoothly and continuously is called the
Leading strand
During protein synthesis, ribosomes
attach to the mRNA molecule and travel along its length
The codon is found in the
mRNA
—- determined the structure of the molecule DNA
Watson and Crick
What nucleotide sequence represents the complement to the DNA strand 5AGATCCG -3?
3 TCTAGGC-5
Two chains of DNA must run in —- direction and must be if they are to bond with each other
Antiparallel complementary
RNA differs from DNA in all of the following except: A. RNA is single stranded and DNA is double stranded B. RNA is a larger molecule than DNA C. RNA contains uracil and DNA contains thymine
B. RNA is larger molecule than DNA
Hydrogen bonds can form between guanine and —- and between adenine and —-
Cytosine and Thymine
Which of the following statements about DNA is false? A. DNA is capable of forming many different sequences B. DNA contains thymine instead of uracil C. DNA is double stranded than a single stranded D. DNA is only found in eukaryotic cells E. DNA contains the sugar deoxyribose
D. Dna is only found in eukaryotic cells
What cause the unwinding of the DNA double helix
DNA helicase
Okazaki fragments are joined together by
DNA ligase
What adds new nucleotide to a growing DNA chain?
DNA polymerase
replication fork
Is a y shaped structure where both DNA strands are replicated simultaneously
In DNA replication, the lagging strand is
Is synthesized as a series of Okazaki fragments
Used X-ray pictures to study DNA
Rosalind Franklin
The information carried by DNA is incorporated in a code specified by the
Specific nucleotide sequence of the DNA molecule
The two molecule that alternate to form the backbone of a polynucleotide chain are
Sugar and phosphate
RNA synthesis is also known as
Transcription
The final product of DNA replication is
Two DNA molecules, each of which contains one new and one old DNA strand
