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15 Cards in this Set

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  • Back
What is the posterior part of an anthropod's body?
abdomen
What is the physical, or nonliving, factor that shapes an ecosystem?
abiotic factor
What is the layer of cells at the petiole that seals off a leaf from the vaccular system?
abscission layer
What is the compound other than chorophyll that absorbs light at different wavelengths?
accessory pigment
What is slime mold that passes through a stage in which its cells fuse to form large cells with many nuclei?
acellular slime mold
Name the neurotransmitter that diffuses across a synapse and produces an impulse in the cell membrane of a muscle?
acetylcholine
What is a compound that forms hydrogen ions (H+) in solution?
acid
Name rain containing nitric and sulfuric acids.
acid rain
Name an animal lacking a coelom, or body cavity.
acoelomate
What is a protein that mainly makes up the thin filaments in striations in skeletal muscle cells?
actin
Name the reversal of charges across the cell membrane of a neuron.
action potential
What is energy needed to get a reaction started?
activation energy
What is immunity produced by a vaccine; so-called because the body had the ability to mount an active immune response against the pathogen?
active immunity
What is an energy-requiring process that moves material across a cell membrane against a concentration difference?
active transport
What is the inherited characteristic that increases an organism's chance of survival?
adaptation