1.3 Studying Life Flashcards
1
Q
8 characteristics of all living things
A
- made up of cells
- can reproduce —- sexual and asexual
- based on a universal genetic code (DNA/RNA)
- grow and develop —differentiation of cells (change shape/structure)
2
Q
continued…
A
- obtain and use materials and energy — metabolism, combination of chemical reactions to break down/build up material
- responds to environment
- maintain a stable internal environment—homeostasis
- change overtime — evolution
3
Q
homeostasis
A
all organisms must maintain a stable internal environment in order to function properly
4
Q
Biology is divided into different fields of study.
- these levels from smallest to largest are…
A
molecules cells organisms populations communities ecosystems biosphere
5
Q
molecules
A
- groups of atoms
6
Q
cells
A
- smallest functional unit of life
7
Q
organisms
A
- individual living things
8
Q
populations
A
- group of organisms of one type that live in the same area
9
Q
communities
A
- populations that live together in a defined area
10
Q
ecosystems
A
- community and its nonliving surroundings
11
Q
biosphere
A
the part of earth that contains all ecosystems
12
Q
Branches of biology
A
zoologists - animals botanist - plants paleontologist - FOSSILS cell biologists - cells geneticists - genes microbiologists - microorganisms ecologists - environment
