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Biology Chapter 12 Test Review
Terms in this set (21)
True/False: The twisted ladder shape of DNA is called a nucleotide
True/False: A double helix consists of DNA wrapped around the histone proteins.
What are the basic building blocks of DNA and RNA?
What did Rosalind Franklin do in her experiment? Please explain.
She used X-ray diffraction to uncover information about the DNA's structure.
_________ is the enzyme that brings DNA nucleotides to the growing DNA molecule during replication.
_________ are short strands of new DNA produced during the replication of the lagging strand.
_____________ is the method by which DNA makes copies of itself.
with what does the synthesis of a new strand of DNA begin?
which is true about the elongation of the lagging strand?
B. produces okazaki fragments
_______ unzips the DNA
_________ adds a short RNA primer
_________ places the proper complementary nucleotide into place on DNA
_______ links together Okazaki fragments
The molecule made during transcription that carries the code from the DNA in the nucleus to the ribosome is ____________
The three letter sequence on mRNA that codes for different amino acids is a(n) ___________
The type of RNA responsible for transporting amino acids to the ribosome is _____________
Thoroughly describe the difference between transcription and translation.
Transcription is the synthesis of RNA from the DNA template where the DNA code is changed into a complementary RNA code. Translation is the synthesis of a protein from the mRNA template where the mRNA code is changed into an amino acid sequence.
regulation of a prokaryotic genome ____________
control the the functional units of DNA _____________
changes in DNA sequence ___________
1. _____________, guanine (G), cytosine (C), and thymine (T) are the four 2. ____________ in DNA. In DNA, 3. ____________ always forms hydrogen bonds with guanine (G). The sequence of 4. ____________ carries the genetic information of an organism. Chargaff's data states that the number of 5. _____________ bases equals the number of pyrimidine bases in DNA. The twisted ladder shape of DNA is called a(n) 6. _____________. DNA is the 7. ____________ of all organisms. The pyrimidine bases have a 8. ______________ structure. The purine bases have a 9. ____________ structure. DNA and RNA are the two 10. _____________ found in living cells. DNA supercoils to make up the structure known as 11. ______________.
1. adenine (A)
2. nitrogenous bases
4. nucleic acids
6. double helix
7. genetic material
10. nucleic acids
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