. Which statements accurately describe calories and Calories?

A Calorie is equal to 1000 calories. A Calorie is equal to a kilocalorie.

Mariana eats an orange. Which statement describes the ultimate source of the energy that her body receives when she digests the orange?

The light energy that originates from the sun provides the energy to grow oranges, which contain macromolecules.

The molecules in the food we eat contain chemical energy stored in chemical bonds. Which statement BEST explains how this energy is released?

Chemical bonds in food molecules are broken, releasing energy and allowing cells to use the energy to make ATP.

Natasha is making a model of cellular respiration. Her model shows the pathway followed when there is enough oxygen available. What does Natasha’s model show?

an aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain

Which two statements explain how the human body is able to obtain energy without becoming too hot?

he breakdown of glucose occurs in many small steps. Low-temperature breakdown of glucose is enabled by enzymes that catalyze specific reactions.

The overall reactions for photosynthesis and cellular respiration are opposite of each other. Select two statements that describe the two processes.

Photosynthesis uses carbon dioxide from the atmosphere and produces oxygen. Cellular respiration uses oxygen to release energy from food and produces carbon dioxide as a by-product.

Glycolysis is the first stage of cellular respiration and is an anaerobic process. During glycolysis, glucose is converted to two molecules of pyruvic acid. How is glycolysis kept functioning during cellular respiration?

Two molecules of ATP from the cell are invested at the beginning of the process of glycolysis.

They learn that in eukaryotic cells the electron transport chain is in a different location than in prokaryotic cells. Which statements give the correct explanation of this difference?

In prokaryotes, the electron transport chain is in the cell membrane. In eukaryotes, the electron transport chain is composed of a series of electron carriers located in the inner membrane of the mitochondrion.

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Question	Answer
. Which statements accurately describe calories and Calories?	A Calorie is equal to 1000 calories. A Calorie is equal to a kilocalorie.
Mariana eats an orange. Which statement describes the ultimate source of the energy that her body receives when she digests the orange?	The light energy that originates from the sun provides the energy to grow oranges, which contain macromolecules.
The molecules in the food we eat contain chemical energy stored in chemical bonds. Which statement BEST explains how this energy is released?	Chemical bonds in food molecules are broken, releasing energy and allowing cells to use the energy to make ATP.
Natasha is making a model of cellular respiration. Her model shows the pathway followed when there is enough oxygen available. What does Natasha’s model show?	an aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain
Which two statements explain how the human body is able to obtain energy without becoming too hot?	he breakdown of glucose occurs in many small steps. Low-temperature breakdown of glucose is enabled by enzymes that catalyze specific reactions.
The overall reactions for photosynthesis and cellular respiration are opposite of each other. Select two statements that describe the two processes.	Photosynthesis uses carbon dioxide from the atmosphere and produces oxygen. Cellular respiration uses oxygen to release energy from food and produces carbon dioxide as a by-product.
Glycolysis is the first stage of cellular respiration and is an anaerobic process. During glycolysis, glucose is converted to two molecules of pyruvic acid. How is glycolysis kept functioning during cellular respiration?	Two molecules of ATP from the cell are invested at the beginning of the process of glycolysis.
Savannah is asked to explain the locations of the stages of cellular respiration. What location should she give for the site of the Krebs cycle reactions?	the matrix of the mitochondria
They learn that in eukaryotic cells the electron transport chain is in a different location than in prokaryotic cells. Which statements give the correct explanation of this difference?	In prokaryotes, the electron transport chain is in the cell membrane. In eukaryotes, the electron transport chain is composed of a series of electron carriers located in the inner membrane of the mitochondrion.
The Krebs cycle consists of many small steps, each catalyzed by an enzyme. What is another name for the Krebs cycle?	the citric acid cycle.
Given that molecules cannot go from a lower energy to a higher energy on their own without an external input of energy, how does the energy for this reaction enter the system?

Created by: marissa24

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