CH2.1 Summative Assessment

Organic molecules always include what three elements? a. _______ b. _______ c. _______

• Carbon, Hydrogen, Oxygen

• Nitrogen, Sulfur, Phosphorus

• Helium, Neon, Argon

• Sodium, Chlorine, Potassium

The main purpose of carbohydrates in the body is to provide a source of _________________

• energy

• protein

• vitamins

• minerals

The building blocks of proteins are _________________

• amino acids

• nucleotides

• fatty acids

• monosaccharides

Amino acids join together by forming a(n) ________________ bond.

• peptide

• ionic

• hydrogen

• covalent

What does an enzyme do, and what happens to it in a chemical reaction?

• An enzyme speeds up a chemical reaction and is consumed in the process.

• An enzyme slows down a chemical reaction and remains unchanged.

• An enzyme speeds up a chemical reaction and remains unchanged.

• An enzyme is a reactant in a chemical reaction and is consumed.

Fats and oils in the body are known as _________________ .

• lipids

• proteins

• carbohydrates

• nucleic acids

The type of lipid that has both hydrophilic and hydrophobic areas is _________________

• amphipathic lipid

• saturated lipid

• unsaturated lipid

• triglyceride

List the three nucleotides found in both DNA and RNA. Then identify the nucleotide found only in DNA and the one found only in RNA. a. DNA & RNA = ________________, ________________, ________________ b. RNA only = ________________

• DNA & RNA = adenine, cytosine, guanine; RNA only = uracil; DNA only = thymine

• DNA & RNA = adenine, cytosine, uracil; RNA only = guanine; DNA only = thymine

• DNA & RNA = adenine, guanine, thymine; RNA only = cytosine; DNA only = uracil

• DNA & RNA = cytosine, guanine, uracil; RNA only = adenine; DNA only = thymine

What is the purpose of gene therapy?

• To treat genetic disorders by correcting defective genes

• To enhance athletic performance

• To improve memory and cognitive function

• To alter physical appearance

ATP is used to create energy in the body by:

• Breaking down into ADP and releasing energy

• Combining with glucose to form energy

• Storing energy in the form of fat

• Converting into proteins