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Glossary of terms used on this site

Glossary of biology.

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Glossaries

Term Main definition
pericentric
Glossaries - Biology glossary

inversion that involves the centromere

pericycle
Glossaries - Biology glossary

outer boundary of the stele from which lateral roots can arise

periderm
Glossaries - Biology glossary

outermost covering of woody stems; consists of the cork cambium, cork cells, and the phelloderm

periderm
Glossaries - Biology glossary

outermost covering of woody stems; consists of the cork cambium, cork cells, and the phelloderm

periodic table
Glossaries - Biology glossary

organizational chart of elements indicating each element's atomic number and atomic mass; provides key information about the elements' properties

peripheral protein
Glossaries - Biology glossary

protein at the plasma membrane's surface either on its exterior or interior side

peripheral resistance
Glossaries - Biology glossary

resistance of the artery and blood vessel walls to the pressure placed on them by the force of the heart pumping

peripheral resistance
Glossaries - Biology glossary

resistance of the artery and blood vessel walls to the pressure placed on them by the force of the heart pumping

perirenal fat capsule
Glossaries - Biology glossary

fat layer that suspends the kidneys

peristalsis
Glossaries - Biology glossary

wave-like movements of muscle tissue

peristome
Glossaries - Biology glossary

tissue that surrounds the opening of the capsule and allows periodic release of spores

peritubular capillary network
Glossaries - Biology glossary

capillary network that surrounds the renal tubule after the efferent artery exits the glomerulus

permafrost
Glossaries - Biology glossary

perennially frozen portion of the Arctic tundra soil

permanent tissue
Glossaries - Biology glossary

plant tissue composed of cells that are no longer actively dividing

permissive
Glossaries - Biology glossary

cell type that is able to support productive replication of a virus