BIO Test 3

Front

When did eukaryotes first appear in the fossil record?

Back

Eukaryotes appeared in the fossil record approximately 2.5 billion years ago.

Front

What are the three main domains of life?

Back

The three main domains of life are Bacteria, Archaea, and Eukaryota.

Front

What defines a eukaryote?

Back

Eukaryotes are defined by the presence of organelles, including a nucleus.

Front

What is a prokaryote?

Back

Prokaryotes are organisms that lack organelles, including a nucleus.

Front

Which groups evolved earlier in the history of life?

Back

The Domain and Kingdom groups evolved earlier.

Front

What is the significance of organelles in eukaryotic cells?

Back

Organelles allow for compartmentalization of cellular processes, increasing efficiency.

Front

How do prokaryotic and eukaryotic cells differ in size?

Back

Prokaryotic cells are generally smaller than eukaryotic cells.

Front

What is the role of the nucleus in eukaryotic cells?

Back

The nucleus houses the cell's genetic material and controls cellular activities.

Front

Can you name a characteristic feature of Archaea?

Back

Archaea often thrive in extreme environments, such as hot springs and salt lakes.

Front

What is the primary difference between Bacteria and Archaea?

Back

Bacteria have peptidoglycan in their cell walls, while Archaea do not.