Learning items
Explore shared ideas across books.
Biology
ConceptArtificial selection
Artificial selection is selective breeding in which people influence which organisms reproduce.
ConceptRegulated cell cycle
Cells coordinate DNA replication and division through regulatory controls.
VocabularyATP in cellular work
ATP couples energy-releasing processes to energy-requiring cellular work.
ConceptGene expression
Cells use genetic information to produce functional RNA and, for many genes, proteins.
ConceptHomeostasis
Physiological regulation keeps important internal conditions within workable ranges.
VocabularyHuman microbiome
The human microbiome includes microbial communities associated with the human body and their genetic material.
ConceptColonization versus infection
Colonization is microbial presence or growth at a body site without causing tissue damage or disease; infection may be symptomatic or asymptomatic.
ConceptCell compartmentalization
Membranes separate cellular environments and organize different tasks.
VocabularyEpidermis
The epidermis is the outermost layer of the skin.
All items includes definitions still awaiting topic classification.