HTHSCI 1H06 Lecture Notes - Lecture 26: Loose Connective Tissue, Proteoglycan, Cytoplasm
29 Apr 2016
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Document Summary
The building blocks for biological form and structure. All similar in terms of essential organelles. Rst person to use the word cell . Aggregations of similar cells that perform speci c functions. Organs work together to form body systems. Optimal volume for the exchange of oxygen, nitrogen, and carbon dioxide. Isolates the cytoplasm from the external environment. Proteins embedded in membranes serve different functions. Usually high concentration gradient to low concentration gradient. Usually low concentration gradient to high concentration gradient. Rafts sitting on top of the membrane making the cells specialize to perform speci c functions. Cells take on unique shape and function driven by cytoskeletal gene products. Three major classes combine to form intracellular scaffolds: micro laments. Scaffold proteins organize the ow of cellular information. Chromosome movement (mitosis) shuttle mitochondria and vesicles. Contains nuclear pores which allow information to go from the nucleus to the cytoplasm. Imports: transcription factors, histones, dna polymerase, rna polymerase.
