The diagram shows molecules moving across a selectively permeable membrane. The smaller circles represent salt molecules, and th
e dashed line represents the membrane. Which statement best describes the movement of the salt molecules? Their movement requires energy.
Their movement represents active transport.
They move from high concentration to low concentration.
They become unevenly distributed.
They move from high concerntartion to low concertration
Explanation:
the diagram is not provided but am guessing there were bigger circles which could not pass through, which shows that the membrane was selectively permeable to smaller salt molecules. The movement across the membrane did not require energy.
Carbon atoms have four electrons in their outer shell. So, it exhibits tetravalency & thus, a single carbon atom can form a maximum of four (4) bonds with other atoms
