Question

which four of the following characteristics are the same for bacteria and archaea?
□ capsules and slime layers found on most cells
□ presence of peptidoglycan in cell walls
□ inclusions present in the cytoplasm
□ motility structures are present
□ 70s ribosomes present in cytoplasm
□ type of lipid molecules found in plasma membranes
□ chromosome is double - stranded dna

Explanation:

1. Analyze each option:

• Capsules and slime layers: Not found on most cells of either, so incorrect.
• Peptidoglycan: Archaea lack peptidoglycan, so incorrect.
• Inclusions in cytoplasm: Both bacteria and archaea can have inclusions, correct.
• Motility structures: Both can have motility structures (e.g., flagella - like structures), correct.
• 70S ribosomes: Both prokaryotes (bacteria and archaea) have 70S ribosomes, correct.
• Lipid molecules in plasma membranes: Different (archaea have unique lipids), incorrect.
• Chromosome (double - stranded DNA): Both have circular, double - stranded DNA chromosomes, correct.

1. Select four correct ones: inclusions present in the cytoplasm, motility structures are present, 70S ribosomes present in cytoplasm, chromosome is double - stranded DNA.

Answer:

• inclusions present in the cytoplasm
• motility structures are present
• 70S ribosomes present in cytoplasm
• chromosome is double - stranded DNA