Question

chapter 9 pre-test question 10
1 part | -- of 1 point

which of the following is found in binary fission but not in mitosis?

○ duplicated chromosomes attach to the plasma membrane.

○ the result produces 2 nuclei.

○ replication of dna begins at an origin.

○ following the process, a membrane separates the 2 copies.

○ replicated strands of dna separate.

Explanation:

1. Analyze each option:

• Option 1: In binary fission (prokaryotes), duplicated chromosomes attach to the plasma membrane. In mitosis (eukaryotes), chromosomes attach to the mitotic spindle (not plasma membrane).
• Option 2: Both binary fission and mitosis result in 2 nuclei (or equivalent genetic material separation).
• Option 3: DNA replication begins at an origin in both (origin of replication in prokaryotes, multiple origins in eukaryotes but still starts at an origin).
• Option 4: Both processes have a membrane (or cell wall in prokaryotes, cell membrane/cell plate in eukaryotes) separating the two copies.
• Option 5: Replicated DNA strands separate in both processes.

1. So the key difference is the attachment of duplicated chromosomes to the plasma membrane in binary fission, not in mitosis.

Answer:

A. Duplicated chromosomes attach to the plasma membrane.