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7 Science Ch 1-4

7 Sci Ch 1-4 Test 3

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