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Science Exam 6th
| 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 |
Created by:
MCW
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