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5 Written questions

5 Matching questions

  1. All organisms carry out gene expression:
    -flow of genetic info.
    -allows for growth/processes
  2. Symbiotic Theory
  3. Model Organisms
  4. Procaryotes Vs. Eucaryotes
  5. Evidence: mitochondria/chloroplasts resemble bacteria
  1. a Replication--->Transcription--->Translation
  2. b No nucleus
    DNA-one circular chromosome
    DNA not associated with histones
    No membrane enclosed organelles
    Divide by binary fission

    DNA enclosed in nucleus, multiple linear chromosomes DNA associated with histones,non-histone proteins
    Membrane enclosed organelles
    Require mechanisms
  3. c The ancestral eucaryotic cell was a predator that fed by capturing other cells. Such a way of life requires a large size, a flexible membrane, and a cytoskeleton to help the cell move and eat. The nuclear compartment may have evolved to keep the DNA segregated from this physical and chemical hurly-burly, so as to allow more delicate and complex control of the way the cell reads out its genetic information.
  4. d Size
    Single circular DNA molecule
    70 S. ribosome
    Reproduce autonomously
    Have own DNA and machinery
  5. e E. Coli., brewers yeast, Arabidopsis, fly, mouse, fish, worm, human
    Easy to grow

5 Multiple choice questions

  1. ...
  2. ...
  3. Maintain 3-D structure of the cell
    Movement of organelles (microtubules)
    Generate contractile forces (actin filaments)
    Strengthen cell (intermediate filaments)
  4. Conatin their own DNA and reproduce by dividing in two.
    Thought to derive from bacteria that were engulfed by some ancestor of present-day eucaryotic cells, creating a symbiotic relationship.
    Harness energy from oxidation of food molecules to produce ATP.
    Consumes oxygen and releases carbon called this process is called cellular respiration.
  5. Protein synthesis

5 True/False questions

  1. Cell shape depends on functionSurface/volume ratio:volume increases faster than surface area.
    Nucleus(the brain): can only control certain amount of active cytoplasm.

          

  2. Endoplasmic ReticulumIrregular maze of interconnected spaces enclosed by a membrane that transports material through-out the cell
    -Smooth ER:synthesis of lipids, carbs., steroids
    -Rough ER: protein synthesis through ribosomes

          

  3. 3 Domains of LifeArchaea, Bacteria, Eukarya

          

  4. CytoplasmContain own DNAand reproduce by dividing in two.
    Thought to derive from bacteria that were engulfed by some ancestor of present-day eucaryotic cells, creating a symbiotic relationship.
    Contain chlorophyll/enzymes involved in photosynthesis to generate sugar and oxygen.
    Generate food and oxygen for mitochondria to use.

          

  5. Archaea can be extremophilic procaryotes; methanogens, halophiles, or hyperthermophiles...

          

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