Modules D Question 1 1 pts Conferences Chat In a signal transduction pathway tha

Question

Modules D Question 1 1 pts Conferences Chat In a signal transduction pathway that uses a G protein-linked receptor, the Library Re- O effector protein; secondary messanges O effector protein; signal molecule O receptor protein; signal molecule O receptor protein; secondary messange D Question 2 1 pts Choose the correct phrase that describes what occurs when a leaf from a plant is placed in a salt water solution. O The fluid in the plant cellis HYPERTONIC relative to the salt water solution, and water wilflow INTO the cell O The fluid in the plant cell is HYPOTONIC relative to the salt water solution, and water will flow OUT of the cell. O The fluid in the plant cellis HYPERTONIC relative to the salt water solution, and water will flow OUT of the cel. O The uld in the plant cell is HYPOTONIC relative to the salt water solution and water will Flow INTO the cell.

Explanation / Answer

Question 1

option 4 is correct. The receptor protein produces secondary messenger cAMP. When the ligand binds to the GPCR, the receptor is known to be either stimulating or inhibiting the secondary messenger molecule. The second messenger binds to the target protein which further initiates the cellular response.

Question 2

Option 2 is correct. The fluid in the plant leaf is hypotonic to the salt water present outside the leaf. Water flows out of the leaf due to the osmosis. Water moves from its higher concentration to its lower concentration. As the water concentration in the salt solution is lower than that of in the leaf, water flows fro leaf into the salt water.

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