The Plasma Membrane Is Important for All the Following Reasons

question 30

Multiple Choice

The plasma membrane is important for all the following reasons except

• A) it determines what substances enter and exit the cell.
• B) it separates the extracellular fluid from the intracellular fluid.
• C) it acts as a site for cell-to-cell interaction and recognition.
• D) it is an important site for DNA transcription.

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Definitions:

Ductus Arteriosus

A fetal blood vessel that allows blood to bypass the lungs, which closes soon after birth to establish the regular circulatory path.

Ductus Venosus

A fetal blood vessel that connects the umbilical vein to the inferior vena cava, allowing oxygenated blood from the placenta to bypass the liver and enter the systemic circulation.

Fetal Lungs

The lungs of a fetus, which are not used for breathing air but are critical for the development of the respiratory system.

Constitutional Amendment

A formal change or addition proposed or made to a constitution, altering its provisions or principles.