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Concepts of Biology

Review Questions

Concepts of BiologyReview Questions
2.

In gel electrophoresis of DNA, the different bands in the final gel form because the DNA molecules ________.

  1. are from different organisms
  2. have different lengths
  3. have different nucleotide compositions
  4. have different genes
3.

In the reproductive cloning of an animal, the genome of the cloned individual comes from ________.

  1. a sperm cell
  2. an egg cell
  3. any gamete cell
  4. a body cell
4.

What carries a gene from one organism into a bacteria cell?

  1. a plasmid
  2. an electrophoresis gel
  3. a restriction enzyme
  4. polymerase chain reaction
5.

What is a genetically modified organism (GMO)?

  1. a plant with certain genes removed
  2. an organism with an artificially altered genome
  3. a hybrid organism
  4. any agricultural organism produced by breeding or biotechnology
6.

What is the role of Agrobacterium tumefaciens in the production of transgenic plants?

  1. Genes from A. tumefaciens are inserted into plant DNA to give the plant different traits.
  2. Transgenic plants have been given resistance to the pest A. tumefaciens.
  3. A. tumefaciens is used as a vector to move genes into plant cells.
  4. Plant genes are incorporated into the genome of Agrobacterium tumefaciens.
7.

What is the most challenging issue facing genome sequencing?

  1. the inability to develop fast and accurate sequencing techniques
  2. the ethics of using information from genomes at the individual level
  3. the availability and stability of DNA
  4. all of the above
8.

Genomics can be used in agriculture to:

  1. generate new hybrid strains
  2. improve disease resistance
  3. improve yield
  4. all of the above
9.

What kind of diseases are studied using genome-wide association studies?

  1. viral diseases
  2. single-gene inherited diseases
  3. diseases caused by multiple genes
  4. diseases caused by environmental factors
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