Question | Answer |
Cells | The smallest units of life |
Bacteria | The smallest organisms on earth |
Cell membrane | Helps control what enters and leaves the cell |
Cell wall | Helps support and protect cells (plant) |
Organelles | Specialized cell parts |
Nucleus | Controls most of the cell's activities |
Vacuole | Stores food, water, minerals, and waste |
Mitochondria | Converts food energy into a form that the cell can use |
Photosynthesis | Chloroplasts capture light energy and combine carbon dioxide from the air with water to make food |
Tissue | Groups of similar cells that all work together |
Organ | Different types of tissues working together |
Organ system | A group of organs that work together to do a certian job. |
symmetry | the arrangement of the individual parts of an object that can be divided into similar halfs |
invertebrates | animals with no backbone |
cnidarians | hollow bodied animals with two cell layers that are orginizad into tissues. |
polyp | vase shaped body |
medusa | bell shaped body |
mollusks | soft bodied invertibrets that usally have a shell(snail) |
mantle | thin layer of tissue covering the mollusk's soft body |
gills | organs in wich carbon dixiode from the animal is exchanged in the water |
radula | scratchy tongue like organ |
open circulatory system | no blood vessels. |
closed circulatory system | has blood vessels |
arthopods | animals with jointed apendeges |
apendages | structers such as claws and legs and anntene that grow from the body |
exoskeleton | rigid body covering |
metamophisis | change in body |
chordates | have a notocord have a nerve cord and pharengial pouches |
endotherms | warm blooded animals |
ectotherms | cold blooded animals |
cartilage | tough flexible tissue |
hibernation | cold weather inacvitity |
estivation | hot weather inacvitity |
amniotic egg | yolk supplies food and has a tough leathery shell |
countor feathers | give adult birds streamlined shape |
down feathers | helps birds stay warm |
herbivore | plant-eating animal |
carnoivore | meat-eating animal |
onmivore | anything-eating animal |
monotremes | tough leathery egg shell only mammals without of having live birth |
marsupials | carry their young in a pouch |
placental | the largest number of mammals |
Ecosystem | All the living and nonliving parts of an area |
Ecology | The study of interactions that take place among the living and nonliving parts of an ecosystem |
Biosphere | The part of Earth where organisms can live |
Biotic factors | The organisms that make up the living part of an ecosystem |
Abiotic factors | The nonliving things found in an ecosystem |
Population | A group of the same type of organisms living in the same place at the same time |
Community | All of the populations that live in an area |
Limiting factors | The things that limit the size of a population (such as food or rainfall) |
Niche | The role of an organism in an ecosystem |
Habitat | The place where an organism lives |
Producer | An organism that makes its own food |
Consumer | Eats other organisms |
Decomposer | Uses dead organisms and waste for food |