Quiz 3: Organelles Flashcards
What is the cell theory
Cells are building blocks of all living things
All new cells come from division of pre-existing cells
Cells are the smallest unit that perform all vital physiological functions
What is the phospholipid bilayer made out of
Water soluble heads form surfaces
Water inside able tales form interior
True or false
The phospholipid bilayer is not permeable to lipid soluble substances
False it is permeable to lipid soluble substances
What is the function of cholesterol
Stabilizes the membrane
What do proteins make up
Receptors
Pores, channels, carriers
Enzymes
What are the four functions of the plasma membrane
Physical isolation
Regulation of exchange with the environment
Sensitivity to the environment
Structural support
Control center of the cell
Nucleus
What are the exceptions of the only one nucleus per cell rule
Multiple: skeletal muscle cell
None: mature red blood cells
Porous double membrane
Separates nucleoplasm from cytoplasm
Characteristics of the nuclear envelope
Dense collection of RNA and proteins
Site of ribosome production
Characteristics of the nucleolus
Fibers of DNA and proteins
Stores information for synthesis of proteins
Characteristics of chromatin
What is the structure of ribosomes
RNA and proteins
Fixed: attached to endoplasmic reticulum
Free: scattered and cytoplasm
What is the function of ribosomes
Protein synthesis
Double membrane
Inner membrane contains metabolic enzymes
structure of mitochondria
What is the function of mitochondria
Production of 95% of cellular ATP
What is the structure of the Lysozyme
Vessels containing digestive enzymes
What is the function of the Lysozyme
Removal of damaged organelles or a pathogens
What is the structure of peroxisome
Vessels containing degradative enzymes
What are the functions of peroxisomes
Catabolism of fats or other organic compounds
Neutralization of toxic compounds
Synthesis of phospholipids and cholesterol
Synthesis of steroid hormones
Synthesis and storage of glycerides
Synthesis and storage of glycogen
What are the functions of smooth endoplasmic reticulum
Has attached ribosomes
Modification of newly synthesized proteins
Export to Golgi apparatus
the characteristics and functions of rough endoplasmic reticulum
Storage and alteration of synthesized products
Modifications of proteins(add or subtract components)
Packaging of proteins in vesicles
Functions of the Golgi apparatus
Long, slender plasma membrane extensions
Common and respiratory and reproductive tract
Characteristics of cilia
What is a flagella
Tail for movement in humans only be found in sperm
Packages formed by the membranes of other organelles or the cell membrane
vesicles
Membrane extensions containing microfilaments
villi and microvilli
What is the function of villi and microvilli
Increase surface area for absorption
Fine protein filaments or tubes
structure of cytoskeleton
Strength and support
Intracellular movement
function of a cytoskeleton
Organizing center containing pair of centrioles
centrosome
