Chapter 1-3 Flashcards
Anatomical position
Body erect
feet slightly apart
palms facing forward
thumbs point away from body
Apoptosis
Eliminated later by programmed cell death
Disaccharide
type of carbohydrate
double sugar
Electrolyte
ions conduct electrical currents in solution
Enzymes
enzymes are biological catalysts
type of protein
Excretion
Removal of wastes from metabolism and digestion
Mass number
total number of protons and neutrons in nucleus
Exergonic
net release of energy
Free radicals
highly reactive chemicals with unpaired electrons
Gene
segments of DNA with blueprint for one polypeptide
Glycolipids
lipids with polar sugar groups on outer membrane surface
Homeostasis
the maintenance of internal stability through constant environmental changes
Isotonic solution
same solute/water concentration as inside cells; water moves in and out).
ligands
A molecule that binds to another. Often , a soluble molecule such as a hormone or neurotransmitter that binds to a receptor.
Lipids
Contain C, H, O (less than in carbohydrates), and sometimes P
Insoluble in water
Phagocytosis
Pseudopods engulf solids and bring them into cell’s interior
Form vesicle called phagosome
Promoter
DNA sequence specifying start site of gene on template strand
Ribosomes
granules containing protein and rRNA
Serosa
Thin,double layered membrane
Solute pumps
moves solutes against concentration gradient
Solutions
Homogeneous mixtures
Axial
head
neck
torso
interstitial fluid
a solution that bathes and surrounds the tissue cells
Isomer
each of two or more compounds with same formula but different arrangements of atoms in the molecule and different properties
Radiant energy
travels in waves
