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Questions and Answers
What does being a prokaryote imply about bacteria?
What does being a prokaryote imply about bacteria?
- They contain membrane-bound organelles
- They don't have a nucleus (correct)
- They have complex cell structures
- They are eukaryotic organisms
Which characteristic is true for bacteria being prokaryotes?
Which characteristic is true for bacteria being prokaryotes?
- They have a nucleoid region (correct)
- They always have flagella
- They are multicellular organisms
- They are larger than most cells
Which statement is incorrect about prokaryotic cells?
Which statement is incorrect about prokaryotic cells?
- They lack membrane-bound organelles
- They are primarily unicellular
- They reproduce through binary fission
- They have a defined nucleus (correct)
Which of the following features is generally associated with prokaryotic bacteria?
Which of the following features is generally associated with prokaryotic bacteria?
What is a common misconception about prokaryotic organisms?
What is a common misconception about prokaryotic organisms?
Flashcards
Prokaryotes
Prokaryotes
Organisms with cells that lack a nucleus and other membrane-bound organelles.
Nucleus
Nucleus
A cell's control center that houses its genetic material (DNA).
Nuclear Membrane
Nuclear Membrane
A cell structure that encloses the nucleus in eukaryotic cells.
Eukaryotes
Eukaryotes
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Bacteria
Bacteria
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Study Notes
Prokaryotic vs. Eukaryotic Cells
- Prokaryotic cells are characterized by their lack of a membrane-bound nucleus and other membrane-bound organelles.
- Eukaryotic cells, in contrast, contain a nucleus and other organelles enclosed by membranes.
- Bacteria are classified as prokaryotes.
Key Characteristics of Prokaryotes
- Lack a nucleus. This means their genetic material (DNA) is not contained within a membrane-bound compartment.
- Do not possess membrane-bound organelles like mitochondria, endoplasmic reticulum, or Golgi apparatus, which are common in eukaryotic cells.
- Their DNA is typically a single, circular chromosome located in a region of the cytoplasm called the nucleoid.
- Possess a cell wall composed of peptidoglycan (in most bacteria).
- Often smaller in size than eukaryotic cells.
- Can have a wide range of shapes, from cocci (spherical), bacilli (rod-shaped), to spirilla (spiral).
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