Célula

The video explains that bacteria consist of a single cell, while complex organisms like humans have up to 100 trillion cells. Cells vary significantly in size and function, with most being microscopic. The largest cell is an unfertilized ostrich egg, which weighs about 1 kg.

What is the primary difference between bacteria and humans in terms of cellular structure?

• Bacteria are single-celled, while humans have trillions of cells.

• Bacteria have no cells, while humans have a single cell.

• Bacteria have multiple cells, while humans have a single cell.

• Bacteria and humans both have trillions of cells.

How do cells vary in terms of their characteristics?

• All cells are the same size and function.

• Cells vary in size but not in function.

• Cells vary in function but not in size.

• Cells vary greatly in both size and function.

What is the approximate size of most cells?

• 1 mm

• 1 cm

• 10 mm

• 100th of 1 mm

Which of the following is the heaviest cell?

• A bacterial cell

• An unfertilized ostrich egg

• A human skin cell

• A plant cell

What is the weight of the heaviest cell mentioned?

• 10 kg

• 1 kg

• 100 grams

• 10 grams