Which of These Are Viable Suggestions to Explain the Mixed

question 82

Multiple Choice

Which of these are viable suggestions to explain the mixed character of the eukaryotic genome? (Select all correct choices)

• A)an archaebacterial cell fused with a eubacterial cell and the genomes integrated
• B)eubacterial genes migrated from chloroplasts and mitochondria to become nuclear genes
• C)eukaryotic genes migrated from chloroplasts and mitochondria to become nuclear genes
• D)eukaryotic cells evolved from archaebacterial ancestors and then picked up eubacterial genes
• E)archaebacterial genes migrated from chloroplasts and mitochondria to become nuclear genes

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Definitions:

Ligand-gated

A type of ion channel that opens or closes in response to the binding of a chemical messenger (ligand), such as a neurotransmitter.

Neurotransmitter

Neurotransmitters are chemical messengers that transmit signals across a chemical synapse from one neuron (nerve cell) to another target neuron, muscle cell, or gland cell.

Neuroglial Cell

Supportive cells in the nervous system that provide structural and metabolic support to neurons.

Schwann Cell

A type of glial cell that wraps around nerve fibers in the peripheral nervous system, forming the myelin sheath.