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5 Written questions

5 Matching questions

  1. replication produces...
  2. DNA must be able to...
  3. after DNA is replicated..
  4. single stranded DNA becomes...
  5. gene expression
  1. a two identical copies of the cell's genetic information
  2. b replicate or copy, its coded instructions
  3. c the cell divides to form two offspring cells, or daughter cells, each containing identical copies of DNA (mitosis)
  4. d a template for a new DNA molecule to be made
  5. e -every body cell contains a complete set of identical genetic instructions
    -cells have selective activation of only the genes necessary for that cell
    - the environment can also affect the expression of genes

5 Multiple choice questions

  1. attaching matching base pairs of DNA to each template
  2. A,T,G and C (Adrenine, Thymine, Guanine and Cytostine)
    A and T, G and C
    -sequence of bases in a DNA molecule forms a coded message
  3. -carry out most of the cells
    -can be enzymes, hormones, antibodies, or make up parts of cell organelles
    -the DNA code of gene is read in the nucleus and a messenger molecule is created (messenger RNA)
    -the message travels to a ribosome in the cytoplasm
  4. single stranded, contains U instead of T, for uracil
  5. they can only be in sex cells, only sex mutations in sex cells can be inherited

5 True/False questions

  1. each subunit contains...a sugar, phosphate, and a nitrogenous base


  2. genesare sequences of DNA that contain a code of instructions for a specific trait
    -a human cell contains many thousands of different genes, located on chromosomes, in its nucleus


  3. DNA moleculesmove specific amino acids to the ribosome, which are strung together to make a protein (transfer RNA)


  4. the order of amino acids is determined by the DNA codeselective breeding and gene manipulation


  5. human traitsan alteration in a sequence of DNA
    -change the normal message carried by the gene, causing a defect
    - they are random
    -affect the synthesis of proteins, which causes malfunctions in the cell. EX.) sickle cell anemia is caused by a substitution in the cell
    -can cause cell death