DNA Replication Is Called Semiconservative Because

question 49

Multiple Choice

DNA replication is called semiconservative because

• A) one of the two resulting DNA molecules is new.
• B) the two resulting DNA molecules each have one new DNA strand and one old strand from the original DNA molecule.
• C) both of the resulting DNA molecules are composed of new strands of nucleotides.
• D) no extra nucleotides are incorporated into the replicated DNA molecules.
• E) the sequence of nucleotides in one strand is conserved, whereas the new DNA molecule consists of a unique sequence of nucleotides

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Definitions:

Chloride Shift

The movement of chloride ions into red blood cells as hydrogen ions move out to maintain electrochemical equilibrium, especially important in carbon dioxide transport in the blood.

Bicarbonate Ions

An alkaline ion that acts as a pH buffer in blood and other bodily fluids.

Red Blood Cell Membrane

The semi-permeable membrane that encloses the cytoplasm of red blood cells, maintaining its shape and flexibility, and facilitating gas exchange.

Alveolar Pressure

The pressure within the lung alveoli, which changes during different phases of breathing.