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7 Science Ch 1-4
7 Sci Ch 1-4 Test 3
| Question | Answer |
|---|---|
| 8 | young teenagers need AT LEAST this number of hours of sleep each night |
| aerobic | type of exercise that strengthens the heart and lungs and burns fat |
| agent | type of seed dispersal aided by animals, wind and water |
| AIDS | disease caused by HIV |
| allergy | most common disease affecting the immune system |
| alveoli | air sacs in the lungs |
| anatomy | study of an organism's shape and structure |
| angiosperms | flowerings plants |
| anther | Pollination is the transfer of pollen from __________ to stigma |
| arrhythmia | abnormal heart beat |
| arteries | large blood vessels that carry blood away from the heart |
| atherosclerosis | the buildup of fatty deposits in arteries |
| Bacon | developed the scientific method |
| biennials | plants that have 2 growing seasons |
| bilateral | type of symmetry described when a living thing can be cut in equal halves in only one direction |
| brain | organ that alcohol has the most noticeable effect |
| calcium | mineral that promotes strong bones |
| cancer | abnormal cells growing extremely quickly |
| carbohydrates | group of nutrients that includes both sugars ad polysaccharides |
| cardiovascular | body system that transports nutrients and other materials |
| cerebrum | largest section of the brain |
| cocaine | most powerful natural stimulant |
| common cold | mild infection caused by a virus |
| composite | plant family with flower heads made of disk & ray flowers |
| congenital | refers to a disease that someone is born with |
| cuticle | layer of dead skin at the base of the nail |
| dental caries | scientific name for tooth decay |
| depressants | group of drugs that includes alcohol |
| digestive | body system that breaks down food into a form that can be absorbed |
| ecology | branch of biology that studies the relationship between organisms and their surroundsing |
| emotion | strong feeling expressed in a physical way |
| emphysema | disease in which the air sacs in the lungs collapse |
| enamel | hard substance that covers the crown of your teeth |
| environment | surroundings of an organism or group of organisms |
| fiber | indigestible polysaccharide |
| fibrous | type of roots characteristic to monocots |
| fruit | ripened ovary of a flower |
| glucose, oxygen and water | products of photosynthesis |
| hallucinogen | group of drugs that includes marijuana |
| heart attack | what occurs when the coronary arteries become blocked |
| heroin | illegal drug that comes from the opium poppy |
| hypertrophy | refers to the enlargement of muscles due to exercise |
| hypothesis | sensible explanation to a scientific problem |
| integumentary | body system that covers and protects the body |
| iron | mineral needed for the transport of oxygen in the blood |
| law | scientific idea that has survived many experiments and observations without ever being proven false |
| lipids | group of nutrients that includes fat |
| liver | largest internal organ of the body |
| lymphatic | body system that circulates certain body fluids and protect your body from disease |
| malnutrition | condition that occurs when someone does not get proper nutrition because of a poor diet |
| metastasis | the process by which malignant tumors spread to other parts of the body |
| muscular | body system that moves body parts |
| nervous | body system that controls the other body systems |
| nicotine | drug found in tobacco |
| one | maximum number of variables in a properly designed experiment |
| pea | plant family that helps restore nitrogen to the soil |
| petiole | stalk that attaches a leaf to a stem |
| pimples | what white or black mounds occur when sebaceous glands become clogged |
| pineal | gland that serves as an internal clock |
| pituitary | gland that controls other glands |
| plaque | thin, sticky film of bacteria that forms on teeth |
| potassium | mineral that helps muscles move correctly and maintains water balance |
| proteins | group of essential nutrients made of amino acids |
| respiratory | body system that provides oxygen and removes carbon dioxide |
| six | number of glasses of water a person needs per day |
| skeletal | body system that supports the body |
| stigma | sticky top of the pistil |
| stimulants | group of drugs that includes nicotine, cocaine and crack |
| sun protection factor | what SPF stands for |
| sweat | type of gland that helps keep the body cool |
| tissue | group of cell designed to work as one unit |
| unsaturated | type of fat usually found in vegetable oils |
| urinary | body system that removes liquid wastes |
| vitamin A | nutrient essential for normal growth, good eyesight, and healthy skin |
| xylem | the vessels in plants that carry water and nutrients upward |
Created by:
Mrs_CC
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