Shared Flashcard Set

Details

Chapter 3
Cellular Level of Organization
11
Anatomy
Undergraduate 3
09/12/2008

Additional Anatomy Flashcards

 


 

Cards

Term
Sodium-Potassium Pump
Definition
low concentration Na+, high concentration K; more sodium out than in, more Potassium in than out
Term
Active Transport
Definition
moving against concentration gradient, uses primary (ATP), secondary (energy stored in an ionic concentration
Term
Vesicle
Definition
small, spherical sac
Term
Endocytosis
Definition
three types: receptor-mediated, phagocytosis, bulk-phase
Term
cilia
Definition
numerous, short, hair-like projections extending from the surface of a cell, move materials across the surface of the cell
Term
flagella
Definition
similar to cilia, much longer; usually moving an entire cell; only example in humans: sperm
Term
Ribosomes
Definition
tiny spheres consisting of ribosomal RNA several Ribosomal proteins; occur free (singly or clusters) or together w/ endoplasmic reticulum; site of protein synthesis
Term
Endoplasmic Reticulum
Definition
flattened sacs called sisterns; have ribosomes: rough, no ribos: smooth; transports substances, sotres newly synthesized molecules, synthesized and packages molecules, detoxifies chemicals
Term
Proteosomes
Definition
destroy unneeded, damaged, or faulty proteins, contain proteases which cut proteins into small peptides
Term
Mitochondria
Definition
cellular respiration, central cavity known as matrix, self-replicate using their own DNA, increases the need for ATP, circular DNA w/ 37 genes, mitochondrial DNA are usually inherited only from the mother, site of ATP production by catabolism of nutrient molecules
Term
Nucleus
Definition
most prominent feature of cell, not all cells have nucleus, skeletal muscle multiple, RBCs don't have any, cell's hereditory units, called genes, which are arranged in single file along chromosomes
Supporting users have an ad free experience!