Many Cells in Your Body Stop at the G1 Checkpoint

question 159

Multiple Choice

Many cells in your body stop at the G1 checkpoint and never divide again.Some cells,like skin cells,will continue past the G1 checkpoint.What types of genes tell a skin cell to move on past the G1 checkpoint?

• A) proto-oncogenes
• B) tumor-suppressor genes
• C) cell-enhancing genes
• D) oncogenes
• E) tumor-deflecting genes

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Definitions:

Isobutyl Acetate

An organic compound and ester formed from the reaction of isobutanol with acetic acid, commonly used as a solvent and in flavorings.

Splitting Patterns

Describes how the peaks in an NMR spectrum are divided into multiple sub-peaks due to interactions between non-equivalent hydrogen atoms in a molecule, revealing its structure.

NMR Data

Information obtained from Nuclear Magnetic Resonance spectroscopy, useful for determining molecular structure and dynamics.

Quartet

In nuclear magnetic resonance (NMR) spectroscopy, a signal that is split into four separate peaks, indicating the presence of specific atomic environments in a molecule.