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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


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


Chromosomes decoil to form chromatin


Chromosomal centromeres split and chromosomes migrate to opposite end of the cell

Late prophase

Nuclear membrane and nucleolus disintegrate


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


The actual site of protein synthesis


Hollow cytoskeletal elements that act as organizers for the cytoskeleton


Dense spherical bodies in the nuceleus that are the synthesis site for ribosomal RNA


Houses DNA and RNA

Tight Junctions

Help prevent molecules from passing through the extracellular space between adjacent cells


Type of anchoring junction


Communicating junction

Gap junction

Present electrically excitable tissues

Gap junction

Abundant in tissues subjected to great mechanical stress

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