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Chapter 3

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Ribosomal RNA
Forms part of the protein synthesis site in the cytoplasm
Transfer RNA
Act as "interpreter" molecules that recognize specific amino acids and nucleotide base sequence
Messengegr RNA
Attaches the correct amino acid to its transfer RNA
ATP
Provides energy needed for synthesis reactions
Synthetase enzymes
Found in the cytoplasm, this structure the exact sequence of amino acids of the protein to be made
Ribosomal RNA
May be attached to the endoplasmic reticulum or scattered in the cytoplasm
Telophase
Chromosomes decoil to form chromatin
Anaphase
Chromosomal centromeres split and chromosomes migrate to opposite end of the cell
Late prophase
Nuclear membrane and nucleolus disintegrate
Metapphase
Chromosomes align on the spindle equator
Early prophase
Centrioles move to opposite ends of the cell
Endoplasmic reticulum
Plays a role in the synthesis of steroid-based hormones and proteins
Ribosomes
The actual site of protein synthesis
Microtubules
Hollow cytoskeletal elements that act as organizers for the cytoskeleton
Nucleoli
Dense spherical bodies in the nuceleus that are the synthesis site for ribosomal RNA
Nucleus
Houses DNA and RNA
Tight Junctions
Help prevent molecules from passing through the extracellular space between adjacent cells
Desmosomes
Type of anchoring junction
Desmosomes
Communicating junction
Gap junction
Present electrically excitable tissues
Gap junction
Abundant in tissues subjected to great mechanical stress