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

Question

1. Prokaryotes are only found in the domain Bacteria.

2. Plastid organelles, such as mitochondria and chloroplasts, contain their own DNA and ribosomes.

3. Flagella move by way of dynein proteins that connect microtubules and force them to shift back and forth to bend or rotate the flagella.

4. As the cell doubles in dimensions from its original size, the surface area would increase much more than the internal volume of the cell.

5. Because mitochondria, chloroplasts, and other plastids have their own DNA and ribosomes within double membranes, they are also considered cells.

Answer 1

1.FALSE
The theme of identifying organisms among the domains will frame the discussion of organisms throughout this course.

2. TRUE
Endosymbiosis proposes a common explanation for how the plastids have developed within eukaryote cells.

3.TRUE
Flagellum movement is accomplished as dynein proteins change shape. Similar proteins can move cell components along microtubules stretched through a cell.

4. FALSE
A dreaded word problem, where the numbers aren't as important as understanding the description and magnitude of change in size taking place.

5. FALSE
The definition of cells extends to other common features, including the ability to carry out all vital life functions.