Chapter 14
What is the complementary DNA sequence for the following DNA sequence: 5'-GTGATGCTT-3'?
3'-CACTACGAA-5'
Which of the following marks the 5' end of a DNA molecule?
A phosphate attached to a deoxyribose carbon
Which of the following is true of double-stranded DNA, according to Chargaff's rules?
A=T, C=G
In the figure in the narrative content, which word describes the relationship between the two blue sequences of DNA?
Complementary (to each other)
Which of the following enzymes are responsible for proofreading during DNA synthesis?
DNA polymerases
When is the chromosome in its most condensed state?
During cell division
How does chromosome condensation relate to gene expression?
Gene expression tends to be higher in less condensed areas of the chromosome.
Whose experiment addressed the question of whether a genetic trait can be transferred from one bacterial strain to another?
Griffith
Which of the following nitrogenous bases are purines? Select all that apply.
Guanine Adenine
What is the name of the individual positively charged proteins that interact with DNA to form the structure of the chromosome?
Histones
Which terms describe the two strands of a DNA helix? Select all that apply.
Hydrogen bonded Antiparallel Complementary
After DNA replication has completed, each new double helix contains how many strands of newly synthesized DNA?
One
The 5' end of a DNA sequence is characterized by which chemical group?
Phosphate
Eukaryotic chromosome ends are called telomeres. Which of the following describe telomeres? Select all that apply.
Repetitive Noncoding Short
Which of the following describes the way that DNA is replicated?
Semi-conservative
After the process of DNA replication and cell division, how many genes will be present in each of the daughter cells relative to the original cell?
The same number of genes
In a DNA molecule, the base adenine (A) forms a hydrogen bond with which base?
Thymine (T)
DNA replication proceeds in ________ direction(s) from the origin of replication and always in the _________ direction.
both 5' to 3'
The absence of telomerase activity may impact _________, in which cells stop dividing, whereas most _________ have active telomerases to maintain telomere length.
cell aging cancer cells
____________ between bases holds the DNA helix together. Adenine forms _________ bond(s) with thymine and guanine forms _______ bond(s) with cytosine.
hydrogen bonding two three
A DNA molecule is made up of two __________ chains that form a(n) __________
polynucleotide double helix
