Biological Elements

Question 1

Anions and uses

Answer 1

• NO3-; nitrogen supply plants for amino acids and protein synthesis
• HCO3-; maintenance of blood pH
• Cl-; balancing charge of sodium and potassium
• PO4 3-; cell membranes, nuclei acid, ATP formation, bone formation
• OH-; catalyst, pH determination

Question 2

Component of carbs

Answer 2

• carbon
• hydrogen
• oxygen
• Cn (H2O)n

Question 3

Component of lipids

Answer 3

• carbon
• hydrogen
• oxygen

Question 4

Component of proteins

Answer 4

• carbon
• hydrogen
• oxygen
• nitrogen
• sulfur

Question 5

Cop enemy of nucleic acids

Answer 5

• C
• H
• O
• N
• P

Question 6

Polymers

Answer 6

• long chain made of monomers in repeated pattern
• carbs; saccharides monomers
• proteins; amino acid monomers

Question 7

Name cations and uses in the body

Answer 7

• Ca2+; nerve impulses, muscle contractions, bones
• Na+; nerve impulse transmissions, kidney function
• K+; nerve impulse, stomata like opening
• H-; catalysts in reactions
• NH4+; nitrate ions, bacteria