Question

1. place the molecules in the list in order with smallest molecules at the top and largest molecules at the bottom. it is okay if you arent sure. glucose molecule protein molecule carbon dioxide molecule water molecule amino acid molecule starch molecule oxygen molecule

Explanation:

Step1: Recall molecular - size knowledge

Small simple molecules are generally smaller than complex macromolecules.

Step2: Identify simple molecules

Water ($H_2O$), oxygen ($O_2$), and carbon - dioxide ($CO_2$) are small simple molecules. Among them, water has a relatively small molecular weight compared to oxygen and carbon - dioxide. Oxygen has a molecular weight of 32 and carbon - dioxide has a molecular weight of 44.

Step3: Identify intermediate - size molecules

Amino acids are building blocks of proteins and are larger than simple inorganic molecules but smaller than polymers like starch and proteins. Glucose is a monosaccharide, which is also larger than simple inorganic molecules but smaller than polymers.

Step4: Identify large molecules

Starch is a polysaccharide and proteins are macromolecules composed of amino acids. Proteins are generally larger than starch molecules in terms of molecular weight and size.

Answer:

1. water molecule
2. oxygen molecule
3. carbon dioxide molecule
4. amino acid molecule
5. glucose molecule
6. starch molecule
7. protein molecule