Question

troduction: What is Carotene? Where is it found? How is it related to Vitamin A? ice C6B5 him What happens if there is a deficiency in vitamin A? Methods: Don't copy out the entire procedure. Explain the procedure in the handout in your own words, and describe any changes you made to the procedure 1. 2, 3. 4. Include the table of the results for the absorbance values for all samples. show the calculations of the μg carotene. Graph absorbance vs. mg of carotene of standard sample. Calculate (based on graph) the value of mg of carotene of samples #6 and #7 (unknown). Calculate the average mg per mL. Include the report sheet. 5. Discussion: Summary of your results. Also, answer the discussion questions below Experiment 9: Post-Lab Discussion Questions: I. Name 3 foods that offer a significant amount of β-carotene. 2. Why is the β-carotene solution prepared in the lab made with a hexane- acetone solvent, instead of water as a solvent? 118

Answer 1

Answer:

Introduction:

What is carotene? Where is it found? How is it related to vitamin A? What happens if there is a deficiency of vitamin A?

Carotene is an orange-yellow pigment found in abundant amounts in carrots and other orange, deep yellow, or leafy green vegetables.

$\beta$ -carotene and other provitamin carotenoids, contained in green leafy and yellow vegetables and deep- or bright-colored fruits, are converted to vitamin A. $\beta$ -Carotene is converted into vitamin A in the liver. Two molecules of vitamin A are formed from on molecule of $\beta$ -carotene.

Vitamin A is required for the formation of rhodopsin, a photoreceptor pigment in the retina. Deficiency impairs immunity and hematopoiesis and causes rashes and typical ocular effects (eg, xerophthalmia, night blindness). ?

Vitamin A deficiency may exacerbate low iron status, which can lead to anemia. Other symptoms of vitamin A deficiency include dry skin, bumpy skin, hair loss, and increased severity and mortality risk of diarrhea and measles.

(Since there are multiple questions, the first full question have been answered according to the rules of Chegg)