Chapter One Flashcards
Biology
Study of Life
Properties of Life
Order
Energy processing
Growth and development
response to the environment
Regulation
Reproduction
Evolutionary adaptation
Unifying themes
Organization
Information
Energy and Matter
Interactions
Evolution
Levels of Organization
Biosphere
Ecosystems
Communities
Populations
Organisms
Organs
Tissues
Cells
Organelles
Molecules
Biosphere
All life on Earth and the places where life exists
Ecosystems
all living things in a particular area and nonliving components with which they interact
Populations
All the individuals of a species living within a specific area
Communities
Array of organisms inhabiting a particular ecosystem
Organisms
Individual living things
Organ
Body part that is made of and has a specific function
Tissue
Group of cells working together to perform a specialized function
Cell
Fundamental unit of structure and function of life
Organelle
A particular functional component within a cell
Molecule
Chemical structure of two or more atoms
Structure follows function at every level of biological hierarchy
example: Thin, flat leaves maximize sunlight exposure for chloroplasts
Hummingbird wings rotate at shoulder to allow for forward and backward flying
Cell Characteristics
All cells are enclosed by a membrane
Prokaryotic cells
Cells that lack a nucleus or other membrane enclosed organelles
Eukaryotic cells
Cells that contain membrane-enclosed organelles
DNA-
deoxyribonucleic acid
DNA serves as
the genetic material that is replicated and passed to offspring
DNA is composed of
a double helix of antiparallel strands
Gene
discreet unit of hereditary information that consists of a DNA sequence of nucleotides
Genes provide blueprint for making
Proteins
Gene expression
Process by which information encoded in DNA directs the synthesis of proteins
DNA—–>mRNA
transcription
mRNA—–>amino acid chain
translation
amino acid chain—–>protein
protein folding
Genome
“library” of genetic instructions inherited by an organism
Genomics
Study of the whole sets of genes in one or more species