BIO SCI 93 Study Guide - Quiz Guide: Ribosomal Rna, Detoxification, Pseudopodia
22 Jan 2018
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BIO SCI 93 Full Course Notes
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A selective barrier that allows passage of enough oxygen, nutrients, and wastes to service the entire cell! Consists bilayer of phospholipids with various proteins (with carbohydrate side chains) embedded in it. Participate in cell"s metabolism because enzymes are built right into the membranes. Directs proteins by synthesizing mrna according to the instructions of dna; mrna is transported to the cytoplasm via nuclear pores; ribosomes translate the mrna"s genetic message into the primary structure of a speci c polypeptide. Pore complex: lines each pore, regulates the entry and exit of proteins and. Nuclear lamina (a netlike array on the inner surface of nuclear envelope) and nuclear matrix (a framework of protein bers throughout the nuclear interior) organize the genetic material so it functions ef ciently. Nuclear envelope: double membrane enclosing the nucleus; perforated by pores, continuous with er. Chromatin: material consisting of dna and proteins; visible in a dividing cell as.
