Answer the following statements true (T) or false (F)

Question

1. An understanding of cellular biology is helping us find new treatments for many diseases.

2. The reason that mitochondrial DNA in most mammals is inherited from the mother only is because a sperm cell contains no mitochondria.

3. All living cells have a cell wall.

4. The Woese system of classification consists of a broad taxonomic grouping of organisms called the domain.

5. Most living cells are small in size because they need a small ratio of surface area to volume.

Answer 1

1. TRUE
Our understanding and treatment of diseases is moving beyond symptoms, as the underlying cell structure and function are discovered. Several examples are offered throughout the chapter.

2.FALSE
Sperm only pass on the nucleus to fertilize an egg, but mitochondria remain in the flagellum.

3.FALSE
The presence (or lack of) and molecular structure of cell walls varies.

4. TRUE
This recent change to our scientific naming system added a broad grouping of organisms with different cell types.

5. FALSE
The ratio of cell membrane surface to the cell volume produces limitations to cell function, in one particular direction.