SB4ab

How do scientists determine the relatedness of organisms?

• By analyzing genetic, morphological, and behavioral characteristics.

• By observing the physical environment of the organisms.

• By studying the geographical distribution of the organisms.

• By examining the dietary habits of the organisms.

What is an example of a eukaryotic organism?

• Bacteria

• Mushrooms

• Viruses

• Archaea

What is a common characteristic of all viruses?

• All viruses can reproduce independently.

• All viruses require a host cell to replicate and cannot reproduce independently.

• All viruses are made of DNA only.

• All viruses can survive without a host cell.

What is the main difference between bacteria and viruses?

• Bacteria are nonliving organisms, while viruses are living organisms.

• Viruses can reproduce independently, while bacteria cannot.

• Bacteria are larger than viruses and can be seen under a microscope.

• Viruses are nonliving organisms, while bacteria are living organisms.

What is the function of the cell membrane in prokaryotic cells?

• The cell membrane controls the movement of substances in and out of the cell.

• The cell membrane provides structural support to the cell.

• The cell membrane is responsible for energy production.

• The cell membrane stores genetic information.

What are eukaryotic cells?

• Simple cells without a nucleus

• Complex cells that contain a nucleus and membrane-bound organelles

• Cells that only exist in multicellular organisms

• Prokaryotic cells with no membrane-bound organelles

In the modern classification system, how are organisms classified?

• Organisms are classified based on evolutionary relationships.

• Organisms are classified based on their habitat.

• Organisms are classified based on their size and shape.

• Organisms are classified based on their color and appearance.

Which two organisms are most closely related in a given classification system?

• Organisms that share a more recent common ancestor.

• Organisms that live in the same habitat.

• Organisms that have similar physical traits.

• Organisms that are part of the same food chain.

What is an example of a prokaryotic organism?

• Bacteria

• Fungi

• Plants

• Animals

What characterizes organisms in the kingdom Archaebacteria?

• They are eukaryotic.

• They are prokaryotic.

• They have a nucleus.

• They are multicellular.