Protobionts Are Thought to Be the First Nonliving Structures That

question 10

Multiple Choice

Protobionts are thought to be the first nonliving structures that evolved into living cells.A critical characteristic of a protobiont that is found in both modern day prokaryotes and eukaryotes is

• A)internal compartments that subdivide metabolic functions.
• B)a boundary membrane that separates external from internal environments.
• C)the ability to exclude all organic substances.
• D)the ability to fuse with any other protobiont for reproduction.
• E)the ability to recognize other protobionts for developmental purposes.

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Definitions:

Posttraumatic Stress Disorder

A disorder of the mind initiated by direct exposure to or witnessing a distressing incident, characterized by repetitive flashbacks, nightmares, and extreme anxiety.

Traumatic Brain Injury

Damage to the brain resulting from an external force, such as a blow to the head, that may affect cognitive, physical, and emotional functions.

Recent Stressful Life Event

A recent occurrence or change in one’s life that causes significant stress, impacting the individual's emotional or physical well-being.

Self-Imposed Isolation

The voluntary separation of oneself from others, which can be a response to various psychological conditions.