AP BIOLOGY

Detailed explanation-1: -The cells in a many-celled organism often have different sizes and shapes. Plant and animal cells usually are larger than bacterial cells. Organelles that use energy from sunlight to produce food are called mitochondria. A microscope that enlarges an object 400 times is said to have a resolution of 400.

Detailed explanation-2: -Cells show great diversity in their shapes and sizes. The size and shape of a cell are related to its function. Some multicellular organisms may have smaller sized cells as compared to many unicellular organisms.

Detailed explanation-3: -Considering an animal cell, we can generalize the shape of a cell as round (spherical) or irregular. Plant cells are much more rigid and rectangular in shape. The size of a cell can be as small as 0.0001 mm (mycoplasma) and as large as six to twelve inches (Caulerpa taxifolia).

Detailed explanation-4: -Cells with different functions generally have different shapes that suit them for their particular job. Cells vary not only in shape but also in size, as this example shows. In most organisms, however, even the largest cells are no bigger than the period at the end of this sentence.

Detailed explanation-5: -Since different cells do different things, they have different shapes and sizes. Each cell has its own unique role to play in helping the body function properly. The shapes of each cell help them to fulfill their roles effectively.