Question

use the pictures of various macromolecules below to answer the questions. 1. what type of macromolecule is shown? 2. what elements are present in this molecule? 3. give an example of an organism that uses primarily this type of molecule for energy.

Explanation:

Question 1

The molecule shown has a repeating unit of a sugar (hexose, likely glucose) linked in a chain, which is characteristic of a carbohydrate (polysaccharide, like starch or cellulose). Carbohydrates are macromolecules made of sugar units, and the structure here with multiple sugar rings connected indicates a polysaccharide, a type of carbohydrate.

Carbohydrates are composed of carbon (C), hydrogen (H), and oxygen (O). The molecular formula of simple sugars (monomers of carbohydrates) is typically \( C_nH_{2n}O_n \), so the elements present are carbon, hydrogen, and oxygen.

Many organisms use carbohydrates (like glucose, starch, or glycogen) for energy. Humans (and other animals) use glucose (a monosaccharide) or glycogen (a polysaccharide stored in liver/muscle) for energy. Plants use starch (stored energy) or glucose for energy during respiration. A common example is humans: we consume carbohydrates (like bread, pasta with starch) which are broken down to glucose, used in cellular respiration for energy.

Answer:

Carbohydrate (specifically a polysaccharide, e.g., starch, glycogen, or cellulose depending on structure details)

Question 2