Properties of Life Flashcards
what is life
organisms (living things)
what are the 4 componements for the organization of life
molecules, cell, tissue, organ
what is a molecule
chemical components of cells, made up of atoms linked by strong bonds
what is a cell
smallest unit of life, cells can be broken down into organelles
what is tissue
a group of similar cells that perform the same function
what is an organ
a structure with two or more tissues working together to perform a function
what is a population
all individuals of the same species in an area
what is a community
all the species in an ecosystem that can interact
what is an ecosystem
a community and its physical environment
what is the biosphere
the part of earth that support all life
what are the 7 properties of life
- cells and organization (one or more cells with ordered structures)
- energy use and metabolism (chemical energy from food or light power the organism)
- response to environmental changes (react to internal or external environment like odour, light and temp.)
- regulation and homeostasis (maintain internal equilibrium by adjusting physiological processes)
- growth and development (changes: specialized cells, increase size increase cells)
- reproduction (asexual or sexual)
- biological evolution (population having adaptive traits that ensure survival and reproduction in their env.)
what does every cell consist of
-surrounded by a membrane
-contain genetic information (DNA)
-internal mass (cytoplasm)
-have ribosomes (protein synthesis)
what is cell theory
-a cell is the smallest unit of life
-cells make up all living things
-new cells arise from preexisting cells
what are single cell organisms
bacteria, archaea, protists (some)
what are multicellular organisms
plants, fungi, animals, protists (some)
