Which of the Following Statements Accurately Describes Vitamin A's Role

question 48

Multiple Choice

Which of the following statements accurately describes vitamin A's role in vision? 

• A) Retinoic acid is the form required for synthesis of retinoblasts. 
• B) Light causes retinal to shift from a cis to a trans configuration. 
• C) Retinol is the form bound to beta-carotene in the corneal membrane. 
• D) Pigment molecules in the retina are composed of vitamin A and the protein elastin. 
• E) Retinol protects the visual cortex from teratogenic chemicals.

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Definitions:

Seasonal Variation

Regular variations in data that happen at consistent intervals because of seasonal influences.

Deseasonalizing

The process of removing the seasonal components of data to analyze and forecast trends more accurately.

Regression Analysis

is a statistical method for investigating and modeling the relationship between variables.

Dependent Variable

The factor in a model or experiment predicted to vary as a result of modifications in the independent variables.