Lesson 2

Proteins are made of folded and bundled chains of _____________ __________.

• Amino acids

• Protein chains

• Ribonucelic acids

• Nitrogen bases

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How could you test each module to determine if it was DNA or RNA?

• You could test for the presence of uracil or thymine.

• You could test for evidence of one stran or two.

• You could test for what sugar molecule one had.

• All

_____________ ______________ carries the genetic information in DNA from the nucleus to the cytoplasm.

• Messenger RNA

• Transfer RNA

The order of DNA’s nitrogen bases tells the cell what proteins to make.

• What DNA does

• What RNA does

• What tRNA does

• What mRNA does

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I know that protein synthesis s the process in which

• The cell uses information from a gene to make a specific protein

• The cell uses information from proteins to make specific genes

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During protein synthesis, the uses information from a _______ on a chromosome to produce a specific protein.

• Gene

• Base

• Acid

• None

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Proteins help determines the size, shape, and other traits of an organism by triggering ___________ processes.

• Cellular

• Global

• Body

• Physiologic

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___________ are made up of molecules called amino acids.

• Proteins

• Carbohydrates

• Fatty acids

• Sugars

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Although they are only _____ amino acids, cells can combine them in different ways to form thousands of different proteins.

• 20

• 10

• 30

• 50

You can think of the 20 amino acids as being like the 26 letter of the alphabet. Those 26 letters can be used to form thousand of words. The letter you use and their order determine the words you form. Just as a change in the type or order of amino acids can result in a different protein.

• True

• False

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