biology unit 3 Flashcards
simulatiles and differences of procaryotic and eukaryotic
procarkyotic are unicellur and very small, eukaryotic are larger and multicellular. they both have Cell Membrane. …
Genetic Material. …
Ribosomes. …
Cytoplasm. ..
what are the major forms of life on earth
animals, plants, protists, bacteria
characterics of protists
eukarototic, most unicelluar, some heterotrophic, ‘junk drawer kingdom.’
plants
Eukaryotic
Always Multicellular
Always Autotrophic
Always have a cell wall
Many have a more
regular shape “brick-like”
Green Chloroplasts MAY
be visible
animals
Eukaryotic
Always Multicellular
Always Heterotrophic
Do not have a cell wall
shapes vary greatly
depending on type of cell
bacteria
Prokaryotic
Always Unicellular
live together in large groups
Cannot see any internal
structures
Most are Heterotrophic,
some are Autotrophic
3 common shapes
round - “cocci”
rod - “bacilli”
spiral - “spirilli”
Fungi
Eukaryotic
Most are Multicellular, some are unicellular (yeast)
Always Heterotrophic
(like animals)
Always have a cell wall
(like plants)
cell
the smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Microscopic organisms typically consist of a single cell
organelle
structures that carry out special functions inside a cell.
molecule
The smallest particle of a substance that has all of the physical and chemical properties of that substance.
cell membrane
lipid bilayer that separates the cell from the external environment and controls exchanges between the cell and its environment.
cytoplasm
a semi fluid substance taht is enclsoed by cells plasma membrane.
ribosomes
a minute particle consisting of RNA and associated proteins found in large numbers in the cytoplasm of living cells.
chloroplast
an organelle within the cells of plants and certain algae that is the site of photosynthesis,
nucleaus
organelle withdouble membrane
cell wall
the firm nonliving layer that encloses and supports the cells of most plants, bacteria, fungi, and algae.
autotroph
organism that can produce its own food using light, water, carbon dioxide, or other chemicals.
heterotroph
an organism that eats other plants or animals for energy and nutrients
surface water
any body of water above ground, including streams, rivers, lakes, wetlands, reservoirs, and creekswater that exists underground in saturated zones beneath the land surface.
ground water
water that exists underground in saturated zones beneath the land surface.
dissolved solids
any minerals, salts, metals, cations or anions dissolved in water.
contaminant
to make something less pure or make it poisonous:
suspended particulates
any small bits of solid material or liquid that can become airborne.
turbidity
measure of the level of particles such as sediment, plankton, or organic by-products, in a body of water.
microbe
a small living thing, another word for microorganism
physical
Use of screens, coarse materials, and gravity to separate unwanted debris & particles from water.
chemical
Kill microorganisms
cause dissolved substances to clump and sink
biological
Use of living microorganisms (bacteria)
that break down harmful materials
