Test Chapter 3

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Anonymous
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118157
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Test Chapter 3
Updated:
2011-11-20 17:52:50
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bio cells
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Cells Chpt 3
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  1. meiosis
    • makes egg and sperm
    • 23 chromosomes
    • 4 cells (n)
  2. mitosis
    • 2 cells
    • function: tissue growth and repair
    • 2 cells
    • 46 chromosomes
  3. transcription
    • RNA polymerase binds to DNA, seperating the strands
    • 1 strand is used as a template from which nucleotides are assembled into a strand of DNA
    • triplet condons
  4. translation
    • nucleic acid language is translated into the language of proteins (amino acid sequence)
    • mRNA is decoded into a polypeptide chain
    • both tRNA and mRNA and rRNA
  5. mRNA
    molecules that carry copies of therse intructions for he genes to assemble into amino acids
  6. tRNA
    transfers each amino acid to the ribosome as it is specified by coded messages in mRNA
  7. replication
    • DNA molecule seperates into 2 strands, then produces two new complementary strands following the rules of base pairing
    • enzymes unzip the DNA
  8. what is differentiation
    • when certain cells become specialized
    • efficent in doing only some things well
  9. misoderm
    gives rise to the muscles and initial organs
  10. endoderm
    gives rise to the glands and musosae
  11. ectoderm
    gives rise to skin and nervous system
  12. epitheleal tissue
    • lines orans internally and externally
    • protects, allows absorption, filtration, secretion
  13. characteristics of epitheleal tissue
    • packed in
    • no blood supply
    • exposed surface (internally or externally)
  14. types of epitheleal tissue:
    • squamus
    • cuboidal
    • columnar
  15. celluar arrangements
    • simple-1 layer
    • stratified--more than 1 layer
    • pseudo--messy layers
  16. skeletal muscle
    • long and thin
    • striated (lines)
    • multi nucleated
    • voluntary--we choose to move
  17. cardiac
    • intercollated disc--allows electrical impulses to flow
    • striated
    • involuntary
  18. smooth
    • visceral
    • spindle shaped
    • non-striated
    • single-nuclei
    • gastro
  19. muscles
    • good blood supply
    • thats why red
  20. purpose of connective tissue
    to help and support tissues
  21. connective tissue
    • scattered cells within the matrix
    • hard , solid tissue to watery tisse
    • most matrices are made of protein
    • little blood supply
  22. classifcation of connective tissue:
    • fibrous connective tissue
    • made of protein
    • not elastic
  23. ligament
    connects bone to bone
  24. tendons
    • bone to ligament
    • heal slower than bone
  25. adipose tissue purpose
    • insulate
    • protect
    • breast
    • hormonal balance
  26. hyaline cartilage (connective tissue)
    • flexible but maintains shape
    • matrix: solid but flexible
    • buffer between bones to absord impact
    • forms framework
    • found in bones, ribs, larynx
  27. osseos connective tissue
    • bones living tissue
    • matrix of the bone is calcium mineral and protein
  28. Haversian system
    orderly cell pattern (like in the bone)
  29. blood tissue
    • liquid tissue
    • matrix: plasma
    • white, red, platelets

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