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27 Cards in this Set

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crista
(plural, cristae) An infolding of the inner membrane of a mitochondrion that houses the electron transport chain and the enzyme catalyzing the synthesis of ATP.
Crista
A channel between adjacent tissue cells through which water and other small molecules pass freely.
communicating junctions
cellular metabolism

The sum of endergonic and exergonic reactions in a working cell.
cellular metabolism
cell junctions

A structure that connects cells within a tissue to one another.
cell junctions
cell theory

The theory that all living things are composed of cells and all cells come from other cells.
cell theory
chromosome

A threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins. See chromatin.
chromosome
basal body

A eukaryotic cell organelle consisting of a 9 + 0 arrangement of microtubule triplets; may organize the microtubule assembly of a cilium or flagellum; structurally identical to a centriole.
basal body
dynein arms

A protein extension from a microtubule doublet in a cilium or flagellum; involved in energy conversions that drive the bending of cilia and flagella.
dynein arms
extracellular matrix

(ECM)The substance in which animal tissue cells are embedded consisting of protein and polysaccharides.
extracellular matrix
granum

(plural, grana) A stacked portion of the thylakoid membrane in the chloroplast. Grana function in the light reactions of photosynthesis.
granum
glycoprotein

A protein covalently attached to a carbohydrate
glycoprotein
endomembrane system

The collection of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer of membranous vesicles.
endomembrane system
anchoring junctions

Adhesive junctions that link cells together into tissues.
anchoring junctions
intermembrane space
One of the fluid-filled compartments in the mitchondrion.
intermembrane space
lysosomal storage disease

A hereditary disorder associated with abnormal lysosomes, where the sufferer is missing one of the lysosomal digestive enzymes.
lysosomal storage disease
mitochondrial matrix

The compartment of the mitochondrion enclosed by the inner membrane and containing enzymes and substrates for the Krebs cycle.
mitochondrial matrix
nucleoid region

The region in a prokaryotic cell consisting of a concentrated mass of DNA.
nucleoid region
microtubule

A hollow rod of tubulin protein in the cytoplasm of all eukaryotic cells and in cilia, flagella, and the cytoskeleton.
microtubule
prokaryotic cell wall

A fairly rigid, chemically complex structure that exists outside the plasma membrane of most prokaryotes.
prokaryotic cell wall
pilus

(plural, pili) A surface appendage in certain bacteria that functions in adherence and the transfer of DNA during conjugation.
pilus
prokaryotic flagellum

A long surface projection that propels a prokaryotic cell through its liquid environment; totally different from the flagellum of a eukaryotic cell
prokaryotic flagellum
(plural, plasmodesmata) An open channel in the cell wall of plants through which strands of cytosol connect from adjacent cells.
plasmodesma
tight junction

A type of intercellular junction in animal cells that prevents the leakage of material between cells.
tight junction
transport vesicle

A tiny membranous sac in a cell's cytoplasm carrying molecules produced by the cell.
transport vesicle
secretory protein

Proteins that are secreted by the cell via the endoplasmic reticulum.
secretory protein
A sticky layer that surrounds the cell walls of some bacteria, protecting the cell surface and sometimes helping to glue the cell to surfaces
Capsule
The fluid of the chloroplast surrounding the thylakoid membrane; involved in the synthesis of organic molecules from carbon dioxide and water.
Stroma