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Vitamins have important functions in the human body and are necessary for maintaining good health. Which of these is necessary for proper bone formation?
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
The major role of carbohydrates in the human diet is to
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
The cell wall of a plant helps the plant cell maintain its shape. What is the main structural component of the cell wall of a plant?
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
Venus flytraps and other carnivorous plants obtain much of their nitrogen from amino acids found in the insects. Which of these chemical compounds are the source of the amino acids?
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
A dog gets many nutrients from its food including amino acids. Which of these can be built directly using the amino acids?
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
Plants such as the Venus flytrap and the sundew attract and consume insects. These plants are able to produce substances which break down the insect into compounds that are usable by the plant. One element obtained from these compounds is nitrogen.
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
When the cells of most organisms freeze, they burst. Which property of water causes this to occur?
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
Starch from food is a source of energy for organisms. Starch is a type of
proteins
enzymes
proteins
Vitamin D
Water is less dense as a solid than as a liquid.
cellulose
carbohydrate
supply energy for the body
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