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albulena albulena
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7 years ago
Supercoiling is important for DNA structure, because
 
  A) it holds together the antiparallel strands of DNA in the double helix.
  B) it provides energy for transcription.
  C) it condenses the DNA so that it can fit inside the cell.
  D) it prevents RNA from pairing with DNA in the double helix.


Which of the following statements is TRUE concerning mRNA?
 
  A) mRNA has a very short half-life.
  B) mRNA has complex secondary structure.
  C) mRNA is catalytic.
  D) mRNA is the product of translation.


DNA-binding proteins interact predominantly within which portion of a double-stranded DNA helix?
 
  A) major groove
  B) minor groove
  C) 3' end
  D) supercoil


AT-rich DNA will denature/melt
 
  A) at a higher temperature than GC-rich DNA.
  B) at a lower temperature than GC-rich DNA.
  C) usually at the same temperature as GC-rich DNA, with some minor variations.
  D) in accordance with the animal or plant from which it was taken.


The functional unit of genetic information is the
 
  A) nucleotide.
  B) gene.
  C) chromosome.
  D) protein.
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shza015shza015
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7 years ago
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albulena Author
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7 years ago
thanks for your help
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