Inositol Trisphosphate (IP₃) Is Released into the Cytoplasm When Phosphatidyl

question 97

Multiple Choice

Inositol trisphosphate (IP₃) is released into the cytoplasm when phosphatidyl inositol-bisphosphate (PIP₂) is hydrolyzed.IP₃ is one type of molecule that can directly

• A) open Ca²⁺ channels and increase cytosolic calcium.
• B) close Ca²⁺ channels and deplete intracellular calcium.
• C) stimulate G protein activation of phospholipase.
• D) activate cyclic AMP.
• E) stimulate gene expression.

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Definitions:

Research Hypothesis

A proposed explanation or prediction about a relationship that can be tested through study and experimentation.

Null Hypothesis

A statistical hypothesis that assumes no significant difference exists in a particular condition or feature between two or more sets of data.

Supported

The state or condition of being backed up with evidence or data, making an assertion more robust or credible.

Reject

In statistics, to conclude that there is enough evidence to discard the null hypothesis in favor of the alternative hypothesis.