Bio 2 chapter 12 and 13

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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


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