Chap. 1 Flashcards
Evolution, the Themes of Biology, and Scientific Inquiry (39 cards)
cell theory
Every cell comes from a cell
Cell
basic unit of life
law of conservation
matter cannot be created or destroyed (Chemical elements are continually recycled)
Characteristics of living matter
cellular organization reproduction metabolism homeostasis heredity growth and development
Biosphere (Global ecosystem)
sum of all the planet’s ecosystems
Ecosystem
One or more communities
Population
A group of individuals of the same species (live in the same area)
community
organisms that inhabit a particular area
organism
individual life form
cell
a fundamental unit of structure and function in every living thing
Basic features of all cells
–Plasma membrane–Semifluid substance called cytosol–Chromosomes (carry genes)–Ribosomes (make proteins)
Reductionism
reduction into simpler components easy to understand
systems biology
studies different interactions
simple-building blocks
macromolecules are composed of —–molecules strung together in long chains
Proteins
long chains of amino acids (Only 20 different kinds of amino acids are found in ALL proteins)
ALL Nucleic acids
are constructed of 4 different building blocks: nucleotides
Reductionism
simplification of complex things to study
emergent properties
interaction of parts within a system (bysicle)
eukaryotic cell
has membrane-enclosed organelles, the largest of which is usually the nucleus
prokaryotic cell
is simpler and usually smaller and does not contain a nucleus or other membrane-enclosed organelles
Gene expression
the process of converting information from gene to cellular product, a functional protein
Transcription
the process by which DNA is transformed into RNA(mRNA) for protein production
Genomics
studies of sets of genes
genome
the entire collection of DNA