I have a bio test on this stuff in 2 days and would like an answer key to help me study from, all I need is your help! please? thanks!

1. All organic compunds contain
a) sulfur
b) nitrogen
c) carbon
d) phosphorus

2. which one of the following biochemical groups is not considered organic?
a) carbohydrates
b) lipids
c) proteins
d) minerals

3. which of the following biochemicals would be used as a first source of energy by the body?
a) fats
b) carbohydrates
c) muscles
d) glucose

4. Polysaccharides (such as starch, gycogen, and cellulose) are long chain polymers of
a) fructose
b) sucrose
c) amylase
d) glucose

5. Excess simple sugars in our bodies are stored in the liver in the form of
a) glycogen
b) startch
c) glucose
d) fat

6. __________ aids in the retention of water by the large intestine, prevents constipation, and reduces the likelihood of colon cancer.
a) vitamin K
b) fiber
c) cholesterol
d) sulfur

7. Lipid molecules with single bonds and the maximum number of hydrogen atoms present are called:
a) vegetable fats
b) unsaturated fatty acids
c) saturated fatty acuds
d) none of the above

8. which of the following is not a lipid?
a) cholesterol
b) glycogen
c) wax
d) oils

9. Triglycerides, steroids and cholesterol are all
a) carbohydrates
b) proteins
c) lipids
d) vitamins

10. Cell membranes are made up of:
a) sugars and proteins
b) carbohydrates and fats
c) lipids and proteins
d) startch and fats

11. there are 10 amino acids that cannot be synthesized by the human body and must be obtained in the diet. these are called __________ amino acids.
a) essential
b) non-essential
c) complex
d) simple

12. a strict vegetarian diet is dangerous because:
a) it doesn't provide enough calories
b) it doesn't provide enough fat
c) it doesn't provide the necessary essential amino acids
d) it doesn't provide enough vitamins and minerals

13. which of the substances below is not a protein?
a) sucrase
b) pepsin
c) gastrin
d) lactose

14. Match the following molecules with their digestive end-products: carbohydrates, lipids, proteins, nucleic acids,
a) amino acids, glucose molecules, glycerol and fatty acids, nucleotides
b) glucose molecules, glycerol and fatty acids, amino acids, nucleotides
c) glycerol and fatty acids, glucose molecules, nucleotides, amino acids
d) nucleotides, glycerol and fatty acids, glucose molecules, amino acids

15. what is the function of many water soluble vitamins?
a) subsitute for amino acids
b) functions as enzymes
c) functions as coenzymes
d) substitute for minerals

16. Bacertia in the large intestine of humans are the chief source of vitamin:
a) K
b) C
c) B
d) A

17. __________ is the beauty vitamin. Dry, itchy skin and poor night vision are two symptoms of a deficiency of this vitamin.
a) A
b) B
c) C
d) D

18. which of the following minerals is a structural component of teeth and bones?
a) iodine
b) calcium
c) sodium
d) sulfur

19. _______ is an infancy and childhood disease characterized by the bowing of the legs that is the result of a Vitamin D deficiency.
a) Goitre
b) Rickets
c) Scurvy
d) Anemia

20. the following obersvations were obtained when 2 unknown food samples were subjected to 4 different tests.

FOOD TEST SAMPLE X SAMPLE Y
Biuret Test violet light blue
Iodine Test red-orange black
Benedict's Test orange yellow
Sudan IV Test Sudan IV dissolved Sudan IV dissolved

The similarity between food samples X and Y is that both
a) contain sugar
b) contain starch
c) lack protein
d) do not contain lipids

21. When Benedict's solution is added to a foodstuff and heated, the presence of yellowish-orange precipitate indicates that the foodstuff contains:
a) starches
b) reducing sugars
c) proteins
d) lipids

22. use the following information to answer the question below.

Beans Milk Bread Oatmeal
Benedict's Test – - + -
Sudan IV Dye + + – -
Iodine Test + – + -
Biuret Test + + – +

Key: positive test = +
negative test = -

A reducing sugar may be found in
a) beans, oatmeal, and bread
b) milk
c) bread
d) oatmeal and bread

23. When egg white was tested for the presence of a protein, a deep purple solution formed. the indicator added to the egg solution was
a) Sudan IV
b) Iodine
c) Biuret Reagent
d) Benedict's Solution

24. a positive transluscence test will confirm that a _________ was being tested.
a) carbohydrate
b) protein
c) lipid
d) vitamin

I'm not going to spend my time answering all your questions. Hopefully some else will. the first question is answer C and the second question is answer D.

1. c
2. d
3. b
4. d
5. a
6. a
7. c
8. b
9. c
10. c
11. a
12. c
13. d
14. b
15. c
16. a
17. a
18. b
19. b
i dont know the rest. good luck!