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Practice problem

What Are Proteins? — Structure & Function

By Reagan Devine
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Use the picture of the cell membrane below to answer the following question.

Two types of protein are present in the cell membrane. Protein A is on the outside of the cell membrane while protein B goes the entire way through the membrane.

What type of protein is the protein labeled A?

Choose one answer

Type a concept, like “slope” or “photosynthesis”.

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