What is true about red buoys under the inland rules?

The Inland Rules specifies that red buoys must be passed on the starboard side upon going upstream. The red buoys will mark the right side (starboard side) at inbound direction. It should be placed on the left side (port side)  of the channel when going outbound.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.