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The Cell

A&P

QuestionAnswer
What is the cell membrane? the semipermeable membrane surrounding the cytoplasm of a cell
What does selective permeability mean? allows some molecules through while blocking others
What is a phospholipid bilayer made from? two layers of phospholipids with a hydrophobic interior and a hydrophilic exterior
What is a phospholipid? it has a phosphate head hat is hydrophilic and a fatty acid tail that is hydrophobic
What is an integral protein? it is within the phospholipid bilayer and has a hole that can open and close, allowing specific proteins through
What is the role of cholesterol in the cell membrane? maintains the structural integrity and regulating the fluidity of cell membranes
What makes selective permeability passive? it has no energy
What makes selective permeability active? it has ATP
What is diffusion? the movement of particles from high to low concentration
What is facilitated diffusion? the movement of particles from high to low concentration with the assistance from receptors
What is osmosis? movement of water from an area of high to low concentration
What is filtration? the movement of particles across the cell membrane due to pressure
What is active transport? the movement of particles from low to high concentration
What is exocytosis? taking things out of the cell
What is endocytosis? bringing something into the cell
What is phagocytosis? cell eating, pulls in solid particles
What is pinocytosis? cell drinking, creates a wave to pull in particles
What is the cytosol? fluid within the cell membrane
What does cytosol contain? electrolytes, sugars, and amino acids
What is the exoskeleton? protein mesh within the cytoplasm that give the cell its shape
What is the mitochondria and what does it do? it is the powerhouse of the cell, it contains DNA and has a double membrane. it is capable of division
What are the ribosomes? they are the site of protein synthesis
What forms do ribosomes come in? free and fixed forms
Where is the fixed form of a ribosome attached to? the endoplasmic reticulum
What is the endoplasmic reticulum? the highway of the cell
What is he difference between the smooth and rough endoplasmic reticulum? the rough ER has ribosomes on the surface while the smooth ER does not
What is the golgi? the packing house of the cell
What is the lysosome? it contains hydrolytic enzymes and is produced by the golgi
What is the nucleus? the cell control center
What does the nucleus contain? DNA - the blueprints for proteins
What is the cell membrane of the nucleus called? nucleoplasm
Created by: 1969391956599541
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