Question

skeletal muscle cells are long and thin. they can shorten and lengthen. skeletal muscle cells are responsible for almost all voluntary movement in the body.
keratinocytes are found in the skin. they become flat as they move toward the bodys surface. keratinocytes release keratin, a protein that forms hair, nails, and the skins outer layer.
select the true statements.
all cells are small and round.
the human body contains just one type of cell.
a cells structure allows it to carry out a specific function.
adipocytes contain fat droplets.

Explanation:

• The statement "All cells are small and round" is false. As shown in the image, skeletal muscle cells are long and thin, and keratinocytes change shape as they move.
• The statement "The human body contains just one type of cell" is false. The image shows at least two different types of cells (skeletal muscle cells and keratinocytes), indicating there are multiple cell types in the body.
• The statement "A cell's structure allows it to carry out a specific function" is true. For example, skeletal muscle cells' long and thin structure helps with contraction (voluntary movement), and keratinocytes' ability to release keratin (related to their structure as they move) helps form hair, nails, and the skin's outer layer.
• The statement "Adipocytes contain fat droplets" is a known biological fact (adipocytes are fat - storing cells).

Answer:

C. A cell's structure allows it to carry out a specific function.
D. Adipocytes contain fat droplets.