The Scientists and Their Experiments The Structure of DNA DNA Replication Transcription and Translation Miscellaneous
100
False.
DNA
True or False: Bacteriophages inject *protein* into bacteria, altering the bacteria's genetic information.
100
True.
True or False: The nucleotides within a DNA strand may have different *nitrogenous bases*, but all have identical sugar molecules.
100
True.
Helicases
True or False: *Helicases* are enzymes which act to unwind the double helix of a DNA molecule
100
False.
three
True or False: A codon consists of *four* nucleotides.
100
False.
exons
True or False: Genes determine a person's eye color by coding for *introns* that affect eye color.
200
DNA
In Griffith's experiment, _______________ from the harmful bacteria transferred to the harmless bacteria, and transformed them.
200
ribose
In RNA, ____________ is the sugar in the nucleotide.
200
Origins of Replication
Eukaryotic DNA has more replication forks than prokaryotic DNA, because it has more *starting places*, or _________________________
200
amino acids
The order of nitrogenous bases in DNA determines the order of ________________ in proteins.
200
ATGCAA
A DNA strand that had the sequence TACGTT would have a complimentary strand _________________
400
run in opposite directions
Watson and Crick discovered the two strands in DNA run in which directions?
400
36.6%
Bacterium (S. lutea): A=13.4%
Based on Chargaff's rule, the percentage of cytosine in the DNA of the bacterium, S Lutea, should be around....
400
the conservative model or the dispersive mode.
What was one of the alternative hypotheses to Watson and Crick's proposed method of DNA replication?
400
messenger RNA
ribosomal RNA
transfer RNA
Which molecules are involved in protein synthesis?
Options: transfer RNA, introns, mutagens, messenger RNA, ribosomal RNA.
400
21.5%
In a chicken: A=28.8% and C=21.5%
Based on Chargaff's rule, the percentages of guanine bases in chicken DNA should be around....
400
DNA contains phosphorus and no sulfur.
Why did Hershy and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?
400
uracil
Unlike DNA, RNA contains the nitrogenous base....
400
each with one new strand and one original strand
DNA replication results in two DNA molecules....
400
mRNA
Which type of RNA brings the information in the genetic code from the nucleus to other parts of the cell?
400
Transcription takes place in the nucleus.
Translation takes place in the cytoplasm
In eukaryotes, where do transcription and translation take place in the cell?
600
The process of Transformation, in which one bacteria incorporated the DNA of another bacteria into it's own genome.
What process did Griffith identify in the series of experiments in which injecting mice with harmless R bacteria along with harmless heat-killed S bacteria killed the mice?
600
1) The five-carbon sugar Deoxyribose
2) The nitrogenous bases: Adenine, Thymine, Cytosine, and Guanine.
3) A phosphate group
What are the three main parts of a DNA nucleotide?
600
The leading strand is synthesized as a single molecule in a continuous fashion, and replication occurs in the direction toward the replication fork. The lagging strand is synthesized as a series of fragments, and replication is in the direction away from
Explain the difference between the leading strand and the lagging strand.
600
messenger RNA (mRNA): transcribed from DNA, edited to exclude introns, transported to cytoplasm for transcription.
transfer RNA (tRNA): carries amino acids to the ribosome for translation and protein synthesis.
ribosomal RNA (rRNA): part of ribosome
Describe the functions of the three kinds of RNA.
600
Information travels, in molecular form, from DNA to RNA, to Protein.
What is the central dogma of molecular biology?






Section IIB Test: From DNA to Protein

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