Bio quiz 9.1-9.2 Flashcards
chemical process of life
metabolism
elements and compounds the body needs for energy, repair, and growth
nutrients
energy content of food
Calorie
fat cells
adipose cells
being severely overweight because of excess body fat
obesity
nutrients that are needed in relatively large amounts
macronutrients
vitamins and minerals that are needed in much smaller quantities
micronutrients
the most important energy producing compounds in the cell that provide most of the energy for living things
carbohydrates
simplest of the carbohydrates
sugars
monosaccharides (simple sugars) and disaccharides (two monosaccharides combined) are _______
simple carbohydrates
polysaccharides, formed by long chains of simple carbohydrates, are _____
complex carbohydrates
complex organic molecules used to build and maintain living cells
proteins
______ are the building blocks of proteins
amino acids
varied group of compounds characterized by their insolubility (inability to dissolve) in water
lipids
simplest type of lipid molecule
fatty acid
fatty acids combined into larger molecules form
fats
_____ is a lipid used to make bile and hormones and is used in cell membranes and transports nutrients
cholesterol
energy carrier of the cell and stores chemical energy temporarily
ATP
important organic substances found in plants and animals and foods made from them
vitamins
two groups of vitamins
water-soluble and fat-soluble
molecules that assist a cells’s enzymes in performing their jobs
coenzymes
substances that neutralize harmful molecules called free radicals
antioxidants
important inorganic nutrients needed for proper growth and repair of body tissues
minerals
iron and iodine are called _____ because, though vitally important, they are needed in extremely small quantities
trace elements
much of a person’s body weight is made up of _____
water
condition where the body can’t maintain water balance
edema
tube of the digestive system that includes the oral cavity, esophagus, stomach, and the small and large intestines
alimentary canal
changing of food substances with large, complex chemical molecules into substances with smaller, less complex molecules
digestion
catalysts produced by living cells that speed up chemical changes but aren’t consumed by the process
enzymes
control digestion and are produced by tiny secreting bodies called digestive glands
digestive enzymes
mouth
oral cavity
pushes food between the teeth and helps mix the food with mucus and saliva
tongue
small ball of food
bolus
digestive glands of the mouth
salivary glands
sticky digestive juice
saliva
cut, break, or crush food into smaller pieces so that it may be more easily digested.
teeth
begins digesting starch and breaking it down to sugar
salivary amylase
four front cutting teeth
incisors
two tearing teeth
cuspids
four light-grinding teeth that are in pairs on each side of the jaw next to the cuspids
bicuspids
six heavy-grinding teeth arranged three to a side at the back of the jaw
molars
last molar on each side of the jaw
wisdom tooth
- first set of teeth that appear early in life and are lost
- second set of teeth that are larger and used in adult life
- primary teeth
- permanent teeth
chewing
mastication
- visible part of the tooth
- anchors the tooth below the gum
- inside of the tooth
- mineral substance that covers 1 and is the hardest substance in the human body
- crown
- root
- pulp
- enamel
makes teeth more resistant to decay by strengthening the enamel
fluoride
throat, funnel-shaped cavity at the back of the oral cavity
pharynx
cavities, or tooth decay; most common disease in man
dental caries
sticky, colorless film of bacteria that constantly forms on teeth
plaque
hard deposit of plaque that is not removed
tartar (calculus)
extended neglect or improper oral hygiene can result in ______
periodontal disease
disease where gums are likely to bleed
gingivitis
disease where gums detach from the teeth and the bones supporting the teeth are destroyed
periodontitis
long muscular tube connecting the pharynx to the stomach, that lies behind the trachea
esophagus
rhythmic wave of muscular contractions of the esophagus and digestive tract
peristalsis
small flap of cartilage in the pharynx that closes the top of the trachea as you swallow to prevent food from entering the respiratory tract
epiglottis