Question

true or false: all transport proteins require atp energy to move materials across the cell membrane. true false describe one similarity and one difference between adhesion and recognition proteins.

Explanation:

1. For the first question, not all transport proteins need ATP. Facilitated diffusion uses carrier - or channel - proteins and is passive, not requiring ATP.
2. For the second question, a similarity between adhesion and recognition proteins is that they are both cell - surface proteins. A difference is that adhesion proteins mainly help cells stick to each other or to the extracellular matrix, while recognition proteins are mainly used for identifying self from non - self, like in immune responses.

Answer:

1. B. False
2. Similarity: Both are cell - surface proteins. Difference: Adhesion proteins aid in cell - cell or cell - matrix adhesion; recognition proteins are for self/non - self identification.