NGR 6152 Midterm || with 100% Error-free Solutions

Eukaryotic cells correct answers Consists of 3 general components: plasma membrane, cytoplasm and intracellular organelles Nucleolus correct answers Small, dense structure composed of RNA; most of the cellular DNA Histones correct answers DNA-binding proteins that help compact and fold DNA into chromosomes Passive Transport correct answers The movement of materials through a cell membrane without using energy. Occurs by osmotic pressure. Active Transport correct answers Energy-requiring process that moves large molecules across a cell membrane Transcription correct answers synthesis of an RNA molecule from a DNA template; results in formation of mRNA Translation correct answers Process by which mRNA directs the synthesis of a polypeptide Nonsense Codons correct answers stop codons (UAA, UAG, UGA) Complement System correct answers A group of blood proteins that directly lyse extracellular pathogens membrane attack complex (MAC) correct answers complement system components assembled to form pores in membranes of invading cells classical pathway of complement system correct answers Activated by antigen-antibody complex (adaptive immune system) lectin pathway of complement system correct answers mannose-binding bacterial carbohydrates binds to pathogen surface; second to act Alternate pathway of complement system correct answers Activated by gram-neg bacterial and fungal wall polysaccharides Anaphylatoxins correct answers induce rapid degranulation of mast cells; necessary early in inflammation and occurs CLOSE to inflammatory site chemotactic factors correct answers attract phagocytes to area of inflammation; required for a much longer period and occurs DISTAL to inflammatory site hypertrophy correct answers Increase in cell size; Results in enlarged tissue mass