Question

question: 4
the table shows the direction and function of substances in a chemical reaction that takes place in the chloroplasts of plant cells. the table is missing a title and information at w, x, and y.
title:____

substance	direction in the reaction (in or out)	function in the reaction
oxygen	out	is a product of the chemical reaction
w	in	provides the main energy source for the reaction
sugar molecules	x	y
water	in	splits and is used to provide oxygen and hydrogen atoms for the reaction

what is the direction, x, and function, y, for the sugar molecules?
a. direction x is out; function y is to provide chemical energy for the plant cell.
b. direction x is in; function y is to provide heat energy for the plant cell.
c. direction x is out; function y is to form more chlorophyll for the plant cell.
d. direction x is in; function y is to form large sugar molecules for the plant cell.

Explanation:

Step1: Identify the reaction type

The reaction in chloroplasts is photosynthesis. In photosynthesis, carbon - dioxide and water are taken in, oxygen is given out, and sugar is produced.

Step2: Determine the direction of sugar

Sugar is a product of photosynthesis in chloroplasts, so the direction (X) is out.

Step3: Determine the function of sugar

Sugar provides chemical energy for the plant cell through cellular respiration. So function Y is to provide chemical energy for the plant cell.

Answer:

A. Direction X is out; function Y is to provide chemical energy for the plant cell.