Use the Following Information When Answering the Corresponding Question(s)

question 39

Multiple Choice

Use the following information when answering the corresponding question(s) .
Rhodopsins are light-sensitive molecules composed of a protein (opsin) and retinal (derivative of vitamin A) .Opsin is a membrane protein with several α-helical segments that loop back and forth through the plasma membrane.There are two classes of rhodopsins.According to Oded Beje,one class has relatively slow dynamics (a photocycle of approximately 0.5 second) and is well suited for light detection.The second class has faster dynamics (a photocycle of approximately 0.02 seconds) and is well suited for chemiosmosis pumping of protons or chloride ions across cell membranes.Oded Beje was the first,in September 2000,to report on a rhodopsin (proteorhodopsin) found in the domain Bacteria.[Source: O.Beje et al. ,Science 289 (2000) : 1902.]
-Proteorhodopsin consists of a single polypeptide chain.What is the highest level of structure found in this protein?

• A)primary
• B)secondary
• C)tertiary
• D)quaternary

Calculate z-scores from given data in various scenarios.

Apply knowledge of normal distribution and standard deviations to compare performances across different activities or measurements.

Determine the effects of changes in data (such as increases or decreases in means or standard deviations) on summary statistics.

Understand and calculate new mean and standard deviation after data modification.

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Definitions:

Blood Vessel

A blood vessel is a tubular structure carrying blood through the tissues and organs; a component of the circulatory system.

Median Cubital Vein

A superficial vein located in the cubital fossa of the upper arm, commonly used for venipuncture.

Draw Blood

The process of puncturing a vein to obtain a sample of blood for analysis or donation.

Radial Vein

A vein located in the forearm that runs alongside the radius bone, draining blood from the hand back toward the heart.