The Opening of More and More Na+ Ion Channels During

question 65

Multiple Choice

The opening of more and more Na+ ion channels during depolarization

• A)is the result of the sodium-potassium exchange pump.
• B)is an example of a positive feedback cycle.
• C)is possible only if K+ channels remain closed.
• D)is the cause of the afterpotential.
• E)is an example of a negative feedback cycle.

Comprehend the roles of transcription factors, operators, promoters in gene expression.

Recognize the significance of specific enzymes and proteins in metabolic regulation and gene expression.

Understand the basic structure and function of viruses, including capsid and viral life cycles (lytic and lysogenic).

Grasp the concept of gene expression regulation via enhancers, silencers, and response elements.

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Definitions:

Meristem

Regions in plants where new cells are continuously produced, allowing for plant growth.

Photosynthesis

The process by which green plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using light energy captured by chlorophyll.

Temperate Regions

Areas of the Earth characterized by moderate weather conditions, experiencing distinct seasonal changes.

Xylem Vessels

Tubular structures found in plants, responsible for transporting water and minerals from the roots to various parts of the plant.