BIO 202L: Nutrition

Lab 17 Nutrition BIO 202L

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Pre-Lab Questions:

1. How do the intake of nutrients and expenditure of energy relate to a metabolic level?

Different nutrients have different calorific content. During exercise, your body requires more energy so it is ideal to consume food with high calorific content such as carbohydrates and fats. In the more intense activities, your bodys metabolism increases thus requires more calories for energy.

2. Do you think you take in more calories than you burn in a day? Why or why not?

Yes, I do because Im a stress eater and I cant always find the time to exercise.

Experiment 1: Tracking Your Nutrition

Macronutrient Graph Screenshot:

Analysis: According to the chart, I ate consumed more calories than needed everyday. I am not surprise by this result though because I know that I am a snacker and I tend to drink a lot of sugarly drink throughout the day. To improve my nutrition, I would eliminate sugarly drinks from my diet and drink more water. I would also exercise into my daily routine.

Experiment 2: Testing for Reducing Sugars

Table 1. Testing for Proteins Results

Sample Initial Color Hypothesis

(Protein +/-) Final Color

Protein Present?

Albumin (1) Light yellow + Violet Yes

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Lab 17 Nutrition BIO202L

Sample Initial Color Hypothesis

(Protein +/-) Final Color

Protein Present?

Gelatin (2) Dark yellow + Violet

Yes

Glucose (3) Clear – Blue No

Water (4) Clear – Blue No

Table 2. Testing for Reducing Sugars Results

Sample Initial Color Hypothesis (Reducing Sugar +/-)

Final Color Reducing

Sugar Present?

Potato (1) Off white + Yellow Yes

Onion (2) Off white + Green Yes

Glucose (3) Clear + Red Yes

Water (4) Clear – Blue No

Table 3. Testing for Starch Results

Sample Initial Color Hypothesis (Starch +/-)

Final Color Starch

Present?

Potato (1) Off white +

Dark purple Yes

Onion (2) Off white – Brown No

Starch (3) Murky white + Dark purple Yes

This study source was downloaded by 100000792411801 from CourseHero.com on 11-20-2021 10:07:30 GMT -06:00

https://www.coursehero.com/file/59039396/Lab-17-Worksheet-DONEdocx/

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Lab 17 Nutrition BIO202L

Sample Initial Color Hypothesis (Starch +/-)

Final Color Starch

Present?

Water (4) Clear –

Brown No

Table 4. Testing an Unknown – Proteins

Sample Initial Color Hypothesis

(Protein +/-) Final Color

Protein Present?

Positive Control (1): Light yellow + Violet Yes

Negative Control (2): Clear – Blue No

Unknown (3) Murky white

– Blue No

Table 5. Testing an Unknown Reducing Sugars

Sample Initial Color Hypothesis (Reducing Sugar +/-)

Final Color Reducing

Sugar Present?

Positive Control (1): Off white + Green Yes

Negative Control (2): Clear – Blue No

Unknown (3) Murky white + Orange Yes

Table 6. Testing an Unknown Starch

NOTE: Before filling in this table, take a screenshot of your test tubes to include at the

end of this document.

Sample Initial Color Hypothesis (Starch +/-)

Final Color Starch

Present?

Positive Control (1):

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