| The Scientists and Their Experiments | The Structure of DNA | DNA Replication | Transcription and Translation | Miscellaneous |
|---|---|---|---|---|
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False.
DNA
True or False: Bacteriophages inject *protein* into bacteria, altering the bacteria's genetic information.
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True.
True or False: The nucleotides within a DNA strand may have different *nitrogenous bases*, but all have identical sugar molecules.
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True.
Helicases
True or False: *Helicases* are enzymes which act to unwind the double helix of a DNA molecule
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False.
three
True or False: A codon consists of *four* nucleotides.
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False.
exons
True or False: Genes determine a person's eye color by coding for *introns* that affect eye color.
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|
DNA
In Griffith's experiment, _______________ from the harmful bacteria transferred to the harmless bacteria, and transformed them.
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ribose
In RNA, ____________ is the sugar in the nucleotide.
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Origins of Replication
Eukaryotic DNA has more replication forks than prokaryotic DNA, because it has more *starting places*, or _________________________
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amino acids
The order of nitrogenous bases in DNA determines the order of ________________ in proteins.
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ATGCAA
A DNA strand that had the sequence TACGTT would have a complimentary strand _________________
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run in opposite directions
Watson and Crick discovered the two strands in DNA run in which directions?
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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.... |
the conservative model or the dispersive mode.
What was one of the alternative hypotheses to Watson and Crick's proposed method of DNA replication?
|
messenger RNA
ribosomal RNA transfer RNA
Which molecules are involved in protein synthesis?
Options: transfer RNA, introns, mutagens, messenger RNA, ribosomal RNA. |
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.... |
|
DNA contains phosphorus and no sulfur.
Why did Hershy and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?
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uracil
Unlike DNA, RNA contains the nitrogenous base....
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each with one new strand and one original strand
DNA replication results in two DNA molecules....
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mRNA
Which type of RNA brings the information in the genetic code from the nucleus to other parts of the cell?
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Transcription takes place in the nucleus.
Translation takes place in the cytoplasm
In eukaryotes, where do transcription and translation take place in the cell?
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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?
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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?
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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.
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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.
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Information travels, in molecular form, from DNA to RNA, to Protein.
What is the central dogma of molecular biology?
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