. The sodium-potassium pump is involved in active transport that moves 3 sodium ions from the cell for every 2 potassium ions it moves into the cell. Which of these best explains why energy is needed for active transport?

Which best explains how a heat pump can heat a room? cold air from the house is moved through pipes, where it absorbs thermal energy. warm air from outside is pushed into the house to replace the cold air. combustion warms the air when chemical energy is transferred to thermal energy. fuel is used to move a piston, which pushes warm air into the house.

What noticeable trend from this graph might be used to make a conclusion?

The first amino acid of a new polypeptide chain is