Question

a receptor protein that binds with a signaling molecule and relays the message into the cell by activating other molecules inside the cell
an active transport protein that moves molecules across a membrane against their concentration gradient
a protein involved in enzymatic activity
a glycoprotein that is involved in cell - cell recognition
an attachment protein that provides structural support
submit
previous answers
request answer

Explanation:

The image shows a protein in a cell - membrane context. Active transport proteins move molecules against their concentration gradient. The description in the second option matches this function. Receptor proteins are for signal - transduction, proteins for enzymatic activity catalyze reactions, glycoproteins are for cell - cell recognition, and attachment proteins provide structural support.

Answer:

an active transport protein that moves molecules across a membrane against their concentration gradient