Answer by serge for Excel: How do I reference an entire row except for a couple of cells?

You can also select cells in a row or column by selecting the first cell and then pressing CTRL+SHIFT+ARROW key (RIGHT ARROW or LEFT ARROW for rows, UP ARROW or DOWN ARROW for columns).

Note If the row or column contains data, CTRL+SHIFT+ARROW key selects the row or column to the last used cell. Pressing CTRL+SHIFT+ARROW key a second time selects the entire row or column.

PS.
Is a pity that Excel does not have the same trick that Google Sheets has. By eg. to select from C2 to C (infinity), you can do there:

SUM(C2:2)