Chapter 18 Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| amino acid | building block of protein
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| carbohydrate | nutrient that is usually the body's main source of energy
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| chemical digestion | occurs when enzymes and other chemicals break down large food molecules into smaller ones
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| chyme | liquid product of digestion
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| digestion | mechanical and chemical breakdown of food into small molecules that cells can absorb and use
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| enzyme | a type of protein that regulates nearly all chemical reactions in cells; a type of protein that speeds up chemical reactions in the body without being changed or used up itself
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| fat | nutrient that stores energy, cushions organs, and helps the body absorb vitamins
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| food group | group of foods - such as bread, cereal, rice, and pasta - containing the same type of nutrients
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| mechanical digestion | breakdown of food through chewing, mixing, and churning
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| mineral | inorganic nutrient that regulates many chemical reactions in the body
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| nutrient | substance in foods - proteins, carbohydrates, fats, vitamins, minerals, and water - that provide energy and materials for cell development, growth, and repair
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| peristalsis | waves of muscular contractions that move food through the digestive tract
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| protein | large molecule that contains carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur and is made up of amino acids; used by the body for growth and for replacement and repair of body cells
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| villi | fingerlike projections covering the wall of the small intestine that increase the surface area for food absorption
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| vitamin | water-soluable or fat-soluable organic nutrient needed in small quantities for growth, for preventing some diseases, and for regulating body functions
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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