Abeka 7th Grade Science Test 3

anther to stigma

pollination is the transfer of pollen from

composite family

plant family that characteristically has flower heads consisting of disk and ray flowers

cerebrum

Largest section of the brain

heroin

a completely illegal drug derived from the opium poppy

cocaine

the most powerful natural stimulant

bilateral symmetry

symmetry a living thing that can be divided in equal halves in only one direction

tissue

a group of cells that are designed to work together as a unit

plaque

the thin, sticky film of bacteria that forms on teeth

8 hours

the number of hours of sleep people in their early teens need each night

congenital disease

a disease someone is born with

one variable

maximum number of variables in a properly designed experiment

petiole

The stalk that attaches a leaf to a stem

brain

the organ that alcohol has the most noticeable effect

fibrous roots

a characteristic of monocots

agent dispersal

the scattering of seeds by animals, wind, and water

Bible reading

best way a Christian can learn who God is and what he expects

pea family

helps to restore nitrogen to the soil

stimulants

group of drugs including nicotine

ecology

the study of the relationship between organisms and their surroundings

depressant

type of drug that includes alcohol

cuticle

the layer of dead skin at the base of a nail

marijuana

a hallucinogen drug

pituitary gland

the gland that controls other glands

nicotine

the drug found in tobacco

hypertrophy

the enlargement of muscles due to exercise

xylem

the vessels in plants that carry water and nutrients upward

sun protection factor

SPF stands for what

pimples

white or black mounds that occur when sebaceous glands become clogged

law

a scientific idea that has survived many experiments and observations without ever being proven false

enamel

the hard substance that covers the crown of your teeth

sweat gland

the type of gland that keeps the body cool

malnutrition

a condition that occurs when someone does not get proper nutrition because of a poor diet

iron

mineral needed for the transport of oxygen in the blood

potassium

helps muscles move correctly and maintains water balance

carbohydrates

group of nutrients that includes both sugars and polysaccharides

vitamin A

nutrient essential for normal growth, good eyesight, and healthy skin

fiber

indigestible polysaccharide

proteins

group of essential nutrients made of amino acids

lipids

group that includes fats

calcium

mineral that promotes strong bones

environment

the surroundings of an organism or group of organisms

Bacon

developed the scientific method

aerobic exercise

the type of exercise that strengthens the heart and lungs and burns fat

angiosperms

flowering plants

biennial plants

plants that have two growing seasons

arteries

the large blood vessels that carry blood away from the heart

heart attack

occurs when the coronary arteries become blocked

AIDS

a disease caused by HIV and most commonly found in those who reject biblical moral standards

allergy

the most common disease affecting the immune system

emphysema

a disease in which the air sacs in the lungs collapse

cancer

disease where abnormal cells grow extremely quickly

atherosclerosis

the buildup of fatty deposits in arteries

metastasis

the process by which malignant tumors spread to other parts of the body

common cold

a usually mild respiratory infection caused by a virus

hypothesis

a sensible explanation to a scientific problem

unsaturated fats

vegetable oil usually contain these fats

fruits

structures that flower ovaries develop into

emotion

a strong feeling expressed in a physical way

dental caries

scientific name for tooth decay

six

person needs this at least this number of glasses of water a day

glucose, oxygen, water

the three products of photosynthesis

liver

largest internal organ

alveoli

air sacs in the lungs

nervous system

controls the other body systems

urinary system

system that removes liquid wastes

cardiovascular system

system that transports nutrients and other materials

skeletal system

system that supports the body

integumentary system

system that covers and protects the body

digestive system

system that breaks down food into a form that can be absorbed

respiratory system

system that provides oxygen and removes carbon dioxide