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27 Cards in this Set
- Front
- Back
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Genetic material must be able to:
replicate store information undergo mutations all of the above |
All of the above
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Which of the following is not a DNA base?
adenine thymine uracil cytosine guanine |
uracil
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In the complementary base pairing of the DNA molecule, adenine always combines with _____________ and cytosine always combines with ______________.
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thymine, guanine
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Nucleotides are composed of the following components
phosphate, base, protein deoxyribose sugar, protein, sulfur phosphate, deoxyribose sugar, nitrogen-containing base deoxyribose sugar, sulfur, phosphate none of the above |
phosphate, deoxyribose sugar, nitrogen-containing base
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The best description for the overall shape of the DNA molecule is a:
folded sheet double helix double decker string of beads single helix |
double helix
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Because the two strands of DNA are linked by ______ bonds, an enzyme can unzip them prior to replication
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hydrogen
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Which of the following is not true concerning messenger RNA?
It can be found in the cytoplasm. It contains the sugar ribose. It contains the bases adenine, guanine, uracil, and cytosine. It is single-stranded. It forms a double-stranded helix. |
It forms a double-stranded helix.
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Which of the following carries a copy of DNA's blueprint into the cytoplasm from the nucleus?
tRNA rRNA mRNA cDNA mtDNA |
mRNA
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________ are known as the sites of protein synthesis and are manufactured in the nucleolus.
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Ribosomes
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Transfer RNA serves to:
carry specific amino acids to the ribosomes link amino acids carry specific amino acids to the nucleolus carry specific amino acids to the nucleus build the endoplasmic reticulum |
carry specific amino acids to the ribosomes
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Misspellings of the genetic code can result in a ____________.
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Mutation.
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Transcription of part of a DNA molecule with a nucleotide sequence of CATGAG results in an mRNA molecule with which complementary sequence?
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GUACUC
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During transcription DNA serves as a template for the synthesis of
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messenger RNA
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During protein synthesis which of the following carries a copy of DNA's blueprint into the cytoplasm?
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mRNA
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The universal nature of the genetic code describes the fact that
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the same codons always code for the same amino acids
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A ___________ is a section of DNA that codes for a particular protein
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gene
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During protein synthesis _______ carries amino acids to ribosomal sites
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tRNA
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A primary mRNA molecule becomes a mature mRNA molecule following:
capping one end with an altered guanine nucleotide poly-A tail is added to one end introns are removed exons are made continuous All of the choices are correct |
All of the choices are correct.
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Non-coding segments of DNA are called _______ and coding portions are called _______.
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introns, exons
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_____________ involves the building of a protein
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Translation
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Human Genome Project has revealed that human DNA has approximately:
30,000 bases 300,000 bases 3 million bases 3 billion bases none of the above |
3 billion bases
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It has been determined that the human genome consists of approximately _______ genes
10,000 25,000 300,000 600,000 3,000,000,000 |
25,000
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The gene detective show illustrated that individuals can be identified by small regions of DNA which vary from person to person. These regions are called:
HGPs SNPs cDNA SRYs Transposons |
SNPs
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Patients with cystic fibrosis may be treated with _________ in which the corrective gene may be delivered by a specialized virus.
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in vivo gene therapy
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The automated laboratory procedure that can create millions of copies of a single gene is:
cDNA PCR DNA fingerprinting vector analysis immune phosphorescence |
PCR
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In the recombinant DNA process:
plasmid DNA is cut open, then foreign DNA is inserted foreign DNA is inserted before the plasmid DNA is cut open restriction enzymes stimulate bacterial growth restriction enzymes cleave DNA at random locations DNA ligase creates a break in the plasmid DNA |
plasmid DNA is cut open, then foreign DNA is inserted
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________ organisms can be developed with desirable traits.
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Transgeneic
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