Question

drag the appropriate labels to their respective targets. part a some hormones enter cells via ________. exocytosis receptor - mediated endocytosis pinocytosis primary active transport

Explanation:

1. For the drag - and - drop part:

• In the first image showing a solute being transported across a membrane using membrane protein and ATP, this represents transport work as it involves the movement of a substance across the cell membrane with energy input.
• In the second image with actin and myosin interacting and using ATP to cause movement, this is mechanical work as it involves muscle - like movement at the cellular level.
• In the third image where two molecules A and B combine using ATP, this is chemical work as it involves a chemical reaction with energy input.

1. For Part A: Some hormones enter cells via receptor - mediated endocytosis. Hormones are specific signaling molecules, and receptor - mediated endocytosis is a highly selective process where hormones bind to specific receptors on the cell surface, and then the cell membrane invaginates to form a vesicle that brings the hormone - receptor complex into the cell. Exocytosis is the process of releasing substances out of the cell. Pinocytosis is a non - specific form of endocytosis for taking in extracellular fluid. Primary active transport is mainly for transporting ions or small molecules across the membrane against their concentration gradient using ATP directly, not typically how hormones enter cells.

Answer:

For the drag - and - drop:
First image: Transport work
Second image: Mechanical work
Third image: Chemical work
Part A: B. receptor - mediated endocytosis