sábado, 14 de mayo de 2011

Vocabulary #1

chlorophyll: is a chemical that gives plants their green color and traps light energy.



photosynthesis: is the process in which plants use water, carbon dioxide, and energy from the sun to make food.
vascular plant: plants that have tubelike cells in their roots, stems, and leaves to carry food and water.


nonvascular plant: plants that don't have tubelike cells in their stems and leaves.
moss: is a small, nonvascular plant thtat has both stems and leaves but no roots.


sexual reproduction: is the forming of a new organism by the union of two reproductive cells.


egg: a female reproductive cell.

sperm: a male reproductive cell.

fertilization: the joining of the egg and sperm.
xylem: cells carry water and dissolved minerals from the roots to the leaves.


phloem: cells carry food that is made in the leaves to all parts of the plant.

fern: is a vascular plant that reproduces with spores.
seed: is the part of a plant that contains a new, young plant and stored food.


embryo: is an organism in its earliest stages of growth.


conifer: is a plant that produces seed in cones.

pollen: are the tiny grains of seed plants in which sperm develop.

flowering plant: is a vascular plant that produces seeds inside a flower.


flower: is the reproductive part of the plant.


SECOND BIMESTER!!!!!!

lunes, 18 de abril de 2011

Vocabulary #5

protozoan: are one-celled animla-like organisms with nucleus.










cilia: are short, hairlike parts on the surface of the cell.

sporozoans: are protozoans that reproduce by forming spores.
spores: are special cells that develop into new organisms.
algae: are planlike protists.

multicellular: means that an organism has many different cells that do certain jobs for the organism.
slime molds: are funguslike protists that are consumers.
hyphae: contain cytoplasm and are usually divided by cross walls.

sporangium fungi: are fungi that produce spores in sporangia.
sporangia: are structures, found on the tips of hyphae, thst make spores.
club fungi: fungi with club-shaped parts that produce spores.

sac fungi: produce spores in saclike structures.
budding: is reproduction in which a small part of the parent grows into a new organism.

mutualism: a living arrangement in which both organisms benefit.

lichen: is a fungus and an organism with chlorophyll that live together.

Vocabulary #4

virus: is made of a chromosomes-like part surrounded by a protein coat.
host: is an organism that provides food for a parasite.
parasite: is an organism that lives in or on another living thing and gets food from it.

interferon: is a chemical substance that interferes the way viruses reproduce.
vaccine: are substances made from wakened or dead viruses.

bacteria: are very small, one-celled monerans.
colony: is a group of similar cells growing next to each other.
capsule: some bacteria have a sticky outer layer.

flagellum: some bacteria move with a long, whiplike thread.

fission: is the process of one organism dividing into two organisms.

asexual reproduction: is the reproducing of a living thing from only one parent.

endospore: is thicky-walled structure that forms inside the cell.
saprophytes: are organisms that use dead material for food.

decomposers: are living things that get fet their food from breaking down dead matter into simpler chemicals.

Koch's postulates: are steps for proving that a disease is caused by a certain microscopic organism.

communicable diseases: are ones that can be passed from one organism to another.
antibiotics: are chemical substances that kill or slow the growth of bacteria.
biotechnology: is the use of living things to solve practical problems.
pasteurization: the process of heating milk to kill harmful bacteria.
blue-green bacteria: are small, one-celled monerans that contain chlorophyll and can make their own food.