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September 2, 2015

Homework Help: MATH

Posted by Help!!!!!!!!!!!!!! Fast its urgent Please!!!!!!!!! on Friday, December 7, 2012 at 1:18am.

Chemistry of Life
Multiple Choice
1.
Which of the following form the main components of our body cells?

carbohydrates and proteins
fat and phosphorous
proteins and iron
nucleic acids and calcium

2.
Organic compounds always contain______.

water
oxygen
nitrogen
carbon

3.
Which of these is a compound?

Ca
Mg
Na
H20

4.
Water is such a vital part of an organismís existence because

all the chemical reactions take place in water.
water is used to transport materials.
water acts as an insulator.
all of the above

5.
_______ is an inorganic molecule found in bones.
Salt
Calcium
Nucleic acid
Lipids


My Answer: PLEASE BE HONEST PLEASE THANKS =)

1 carbohydrates and proteins
2 carbon
3 H20
4 all of the above
5 Calcium

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