COPY: Quiz 16

The first step in a signaling pathway that responds to a molecule that stays in the extracellular space is

What type of cell response would take the longest amount of time (on the scale of minutes to hours) to execute?

Which of the following is NOT an intracellular signaling protein activated by an RTK?

Steroid hormones trigger transcription of target genes by

Which of the following types of cell signaling is long range and uses hormones as signals?

The active form of a monomeric GTP-binding protein is the

Which of the following describes negative feedback regulation?

Enzymes that add a phosphate group to a switch protein are called

How does the binding of a signal molecule activate an RTK for downstream signaling?

Shown below is a diagram of how theoretical intracellular signaling pathways could integrate incoming signals to produce a coordinated cell response.

The first step in a signaling pathway that responds to a molecule staying in the extracellular space involves a receptor protein on the cell surface.

The cell response that would take the longest amount of time (on the scale of minutes to hours) to execute is a transcriptional response, which involves changes in gene expression.

Notch receptor is NOT an intracellular signaling protein activated by an RTK (Receptor Tyrosine Kinase).
RTKs are activated when a signal molecule binds to the receptor, causing its auto-phosphorylation, which leads to the recruitment of downstream signaling proteins.

Endocrine signaling is a type of long-range cell signaling that uses hormones as signals.

Negative feedback regulation occurs when the response to a signal reduces the strength or frequency of the original signal.

Enzymes that add a phosphate group to a switch protein are called protein kinases.
These kinases play a crucial role in signal transduction pathways, as they can activate or inhibit downstream proteins.