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43 Cards in this Set

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Invertabrate
an animal without a back bone
Vertabrate
an animal with a back bone
exoskeleton
an inside protective skeleton
exoskeleton
rigid, protective body covering of an arthropod that supports the body and reduces water loss.
ectotherm
cold blooded animal whose body temperature changes with the temperature of its surroundung enviornment.
endotherm
warm-blooded animal whose body does not change with its surrounding enviornment.
estivate
A period on inactivity during hot, dry weather in amphibians, invovles moving to cooler, more humid areas underground.
hibernation
period of inactivity during cold weather;in amphibians involves burying themselves in mud or leaves.
matter
anything that has mass and takes up space.
mitochondria
cell organelles where cellular resiration takes place.
Rhizoids
threadlike structure that anchor nonvascular plants to the ground.
vascular
plant with tubelik structures that move minerals, water, and other substances throughout the plant.
igneous rock
instrusive or extrusive rock that is produced when melted when melted rock from inside earth cools and hardens.
sedimentary rock
a type of rock made from pieces of other rocks, dissolved minerals, or plant and animal matter that collect to form layers.
metemorphic rock
new rock that forms when existing rock is heated and/or squeezed.
mineral
inorganic, solid material found in nature that always has the same chemical makeup, atoms arranged in any orderly pattern and properties such as cleavage and fracture, color, hardness,streak, and luster.
chloroplast
green organnelle in a plants leaf cells where most photosenthesis takes place.
organelle
specialized cell parts that preform a cell's activities.
cellwall
structure of plants, algae, fungi, and many types of bacteria that supports and protects the cell membrane.
vacuole
baloon like cell organelle in the cytoplasm that can store food, water, and other sustances.
nucleous
cell organelle that contains the hereditary material.
nonvascular
plant that absorbs water and other substances directly through its cell walls instead of through tubelike structures.
cambium
vascular tissue that produces xylem and pholeom cells as a plant grows.
cellulose
chemical compound made out of sugar; forms tangled fibers in the cell walls of many plants and provides structure and support.
cuticle
waxy, protective layer that covers the stems, leaf, and flower of many plants and helps prevent water loss.
aerobe
organism that uses oxygen for respiration.
anerobes
organism that can live without oxygen.
pathogen
any organism that can cause disease.
Endospore
a dormant form of a bacterium sourounded by a thick wall; formed when enviornmental conditions are unfavorable.
saprophyte
any organism that uses dead material as a food source.
wavelenth for a compressional wave
the distance from the centers of rarefractions or compressions
melting point
temperature at which a solid becomes a liquid.
freezing point
temperature at which a liquid becomes a solid
dichotomus key
using physical properties to identify something such as crabs.
amplitude
for a transverse wave 1/2 the distance between a crest and a trough.
wavelength for a transverse wave
wave the distance between the tops of the two crest or the bottoms of the two troughs
rarefraction
when molicules spread apart
compression
when molicules are closer together
reflection
occurs when a wave strikes an object and bounces off
refraction
bending of a wave as it moves from one medium into another medium.
gestation period
the time the mother cares for the younge in the placentalq
cilia
a short threadlike structure that extends from the cell membrain.
flagella
whiplike tails that help them move