Elements Found in Living Things

PAGE 1 - Questions (Elements)
Name:
Color each of the elements below according to the color listed next to the element's symbol.
Then color code the squirrel with the correct proportion of each element's color. Now color
code the carrot with the same proportions.
Questions:
1. Name the 4 main elements that make up 95% of an organism.
2. Name the 4 types of bonds carbon can form.
3. What are macromolecules?
4. Name the 4 classes of macromolecules.
5. Give 2 examples of nucleic acids.
6. What elements make up carbohydrates & lipids (symbols)?
7. Name 3 elements your body needs trace amounts of for proper functioning.
8. Use the drawing of the amino acid (on the back of the page you read) to
determine the number of bonds formed by:
____Oxygen
____Hydrogen
____Nitrogen
____Carbon
(*HINT: Remember that the NUMBER OF LINES from a single atom is the
NUMBER OF BONDS)
PAGE 2 - Questions (Carbohydrates)
Name:
Draw the structural formulas for fructose and galactose in the space below. Then
write the chemical formula on the line. (The pictures are on the back of the page you read)
1. Fructose: _____________
2. Galactose: _____________
3. Macromolecules are also known as _____________________.
4. If all the macromolecules are made mainly of the elements CHO, how are they
different?
_________________________________________________________
5. Name 2 ways your body uses carbohydrates.
___________________________ & __________________________
6. What is the smallest subunit that makes up carbohydrates? (What is it called?)
_________________________________
7. What is the ratio of C, H, and O in monosaccharides?
_________________________________
8. If there were 5 Carbons in a monosaccharide…
How many Hydrogens would there be? ______
How many Oxygens would there be? ______
Write its chemical formula:______________
9. Name 3 monosaccharides: ________________________________________
10. Monosaccharides are also called: ____________________ sugars.
11. Dissaccharides are also called: ____________________ sugars.
12. Give an example of a disaccharide: _______________________
13. What two sugars combined to make that disaccharide? __________________
14. Long chains of sugars are called ____________________________.
15. Name four examples of those “long chains of sugars” :
______________________ - used in exoskeletons
______________________ - used to store energy in animals
______________________ - used to store energy in plants
______________________ - used in plant cell walls