BIOL 111 Chapter Notes - Chapter 6: Nuclear Lamina, Nuclear Membrane, Endoplasmic Reticulum
Document Summary
Cytosol: suspends cellular components within the plasma membrane. Chromosomes: carry genes in the form of dna. Ribosomes: complexes that make proteins according to gene instructions. Nucleoid: dna concentrated in a region that is not membrane enclosed. Has a cell wall (peptidoglycan) & membrane -> double membrane. Contains pores and a pore complex that regulates what can enter and exit the nucleus. Nuclear envelope : nuclear membrane, encloses it to the cytoplasm. Nuclear lamina : netlike array of protein filaments that maintains the shape of the nucleus by mechanically. Chromosomes : carry genes in the form of dna. Nucleolus : a place inside of the nucleus where rrna (ribosomal rna) is synthesized from dna instructions. Cells need to maintain a large surface area to volume ratio & for quicker transportation of molecules and nutrients to and from the center of the cell. Chromatin: complex of dna and the proteins making up chromosomes.
