Shared Flashcard Set

Details

Chapter 3 Key Terms
key terms for chapter three that I need to know, like in animal and plant cells.
32
Biology
10th Grade
10/16/2007

Additional Biology Flashcards

 


 

Cards

Term
Mitochondria
Definition
transfers energy from organic compounds to ATP
Term
Ribosome
Definition
organizes the synthesis of proteins
Term
smooth endoplasmic reticulum
Definition
synthesizes steroids, regulates calcium levels, breaks down toxic substances.
Term
rough endoplasmic reticulum 
Definition
prepares proteins for export
Term
Golgi apparatus 
Definition
processes and packages substances produced by the cell.
Term
lysosome
Definition
digests molecules, old organelles, and foreign substances.
Term
microfilaments and microtubules
Definition
contribute to the support, movement, and division of cells.
Term
cilia and flagella
Definition
propel cells through the environment; move materials over the cell surface.
Term
nucleus
Definition
stores hereditary informatin in DNA; synthesizes RNA and ribosomes.
Term
cell wall
Definition
supports and protects the cell
Term
vacuole
Definition
stores enzymes and waste products. (plant cells - eukaryotes)
Term
plastid
Definition
stores food or pigments; one type (chloroplast) transfers energy from light to organic compounds. (plant cells - eukaryotes)
Term
peripheral proteins
Definition
loacted on interior AND exterior surface of the cell membrane.
Term
integral proteins
Definition
proteins that are embedded in the bilayer.
Term
cytoplasm
Definition
between the cell membrane and the nucleus. contains various organelles of the cell.
Term
cytosol
Definition
organelles that are bathed in a gelatin-like aqueous fluid.
Term
fluid mosaic model
Definition
describes cell membrane. the lipid bilayer behaves more like a fluid than a solid.
Term
cristae
Definition
many long folds in the inner membrane. they greatly enlarge the surface area of the inner membrane, making more space for the chemical reactions that occur in the mitochondrion.
Term
spindle fibers
Definition
bundles of microtubules come together and extend across the cell. thick to be visible with a light microscrope.
Term
microfilaments
Definition
threads made of a protein called actin. they link together to form a polymer chain.
Term
nuclear matrix
Definition
the nucleus maintains its shape with the help of a protein skeleton.
Term
nuclear envelope
Definition
sorrounds nucleus by a double membrane.
Term
chromatin
Definition
fine strands in the nuclear envelope; a combination of DNA and protein.
Term
chromosomes
Definition
densely packed chromatins strained. (they are coiled up)
Term
nucleolus
Definition
a spherical area that is the site where ribosomes are syntesized and partially assembled before they pass through the nuclear pores to the cytosol.
Term
chloroplasts
Definition
organells in a plant cell in which the energy of sunlight is converted into chemical energy in organic compounds.
Term
thyklakoids
Definition
a systemp of flattened, membranous sacs in cholorplasts.
Term
tissues
Definition
groups of cells that carry out a specific function
Term
organ
Definition
several types of tissues that interact to perform a specific function form.
Term
organ system
Definition
made up of a group of organs that work together to perform a set of related tasks.
Term
colonial organisms
Definition
a collection of genetically identical cells that live together in a closely connected group.
Supporting users have an ad free experience!