Question

base your answers to questions 7 and 9 the information below and your knowledge of science. cellular respiration chemical reaction in order for athletes to run, bike, or hike long distances, more oxygen needs to be delivered to their cells. athletes also need energy from food. foods high in carbohydrates, such as sugar, provide this energy when the sugar and oxygen react to produce carbon dioxide, water, and energy during cellular respiration. the chemical reaction for this process is modeled below. sugar (glucose) + oxygen → carbon dioxide + water + energy 7 identify the carbon - based molecule product that is formed when the sugar molecule reactant is rearranged during cellular respiration. a the carbon - based product is water. b the carbon - based product is atp. c the carbon - based product is glucose. d the carbon - based product is carbon dioxide. 8 in the cellular respiration chemical reaction model there are plus signs. describe the significance of the plus sign between the reactants. 9 provide evidence from the cellular respiration chemical reaction model to prove that a chemical reaction took place.

Explanation:

Question 7:

Water ($H_2O$) has no carbon, ATP is an energy - carrying molecule not a carbon - based product in the context of this question, glucose is a reactant not a product formed from rearranging the reactant glucose. Carbon dioxide ($CO_2$) is the carbon - based product formed during cellular respiration from the reactant sugar.

Question 8:

The plus sign between reactants indicates that multiple substances are combining to undergo a chemical reaction. In this case, sugar and oxygen are the substances that react together.

Question 9:

A chemical reaction is indicated by the formation of new substances with different chemical formulas. Here, sugar and oxygen (reactants) are transformed into carbon dioxide, water, and energy (products), showing a change in chemical composition.

Answer:

Question 7:

D. The carbon - based product is carbon dioxide.

Question 8:

The plus sign between the reactants indicates that sugar and oxygen combine to undergo a chemical reaction.

Question 9:

The reactants (sugar and oxygen) have different chemical formulas from the products (carbon dioxide, water, and energy), showing a chemical reaction has occurred.