Within a Group, as the Atomic Numbers of the Elements

question 77

Multiple Choice

Within a group, as the atomic numbers of the elements increase, the

• A) elements become less metallic.
• B) atomic radii decrease.
• C) ionization energies decrease.
• D) atomic masses decrease.

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Definitions:

Target Cells

Cells that are specifically affected by hormones or other biochemical signals.

Water-soluble Hormones

Hormones that are soluble in water, allowing them to easily circulate in the blood and bind to cell surface receptors, triggering a response.

Free Hormones

Hormones that are not bound to carrier proteins in the blood, making them biologically active and able to interact with target cells.

Alpha Subunit-GTP

A component of G-protein involved in signal transduction across the cell membrane that becomes active when bound to GTP.