BIO E121 Lecture Notes - Lecture 9: Lysosome, Ribosomal Rna, Microvillus
Document Summary
A region of the plasma membrane engulfs the substance to be ingested. Pinches off from the rest of the membrane. Enclosing the substances in a vesicle, which travels through cytoplasm. Applies to large molecules, single-celled organisms, and droplets of fluid containing dissolved substances. Phagocytosis (cell eating): large particles or bacteria. Chromatin are loose forms of genetic information which are visible in the light of microscope during cell division. Describe the function and structural features of each of the following organelles: nucleus, endoplasmic reticulum, golgi complex, lysosomes, mitochondria, nucleoplasm, nucleolus, and any other organelles listed in your lab manual. Tiny projections that increase cell surface area for absorption. Function: increase cell surface area for absorption. Location: membrane organelle that contains cell"s genetic material. Location: *located in nucleus* - dna (chromatin), rna, and proteins. Location: dna & protein that make up content of the nucleus. Function: contains hereditary information; condenses into chromosomes during cell division.
