Respiration Worksheet for Grade 7

Are your students struggling with understanding the concept of respiration? If so, you've come to the right place. This respiration worksheet is perfectly tailored for Grade 7 students who are learning about this vital biological process. With carefully crafted questions and clear instructions, this worksheet will help enhance their understanding of respiration and the entities involved in this subject.

  Respiratory System Worksheet Answers

---

  Cellular Respiration Flow Chart Worksheet

---

  Photosynthesis and Cellular Respiration Worksheet Answers

---

  Photosynthesis and Cellular Respiration Worksheet Answers

---

  Cell Processes Worksheet

---

  Cellular Respiration Worksheet Middle School

---

  Cellular Respiration Review Worksheet Answers

---

  Photosynthesis and Cellular Respiration Worksheet Answers

---

  Respiratory System Worksheet Answer Key

---

  Cellular Respiration Flow Chart

---

What is respiration?

Respiration is the process by which organisms exchange gases with their environment, typically taking in oxygen and releasing carbon dioxide. In animals, respiration includes the intake of oxygen by the respiratory system and the subsequent release of carbon dioxide through cellular metabolism. In plants, respiration involves taking in carbon dioxide during photosynthesis and releasing oxygen as a byproduct.

What are the two types of respiration?

The two types of respiration are aerobic respiration and anaerobic respiration. Aerobic respiration requires oxygen and occurs in the presence of oxygen, producing a larger amount of energy in the form of ATP. Anaerobic respiration, on the other hand, occurs in the absence of oxygen and produces a smaller amount of energy.

Where does respiration take place in plants?

Respiration in plants takes place primarily in the mitochondria of plant cells. Mitochondria are organelles that are responsible for generating energy in the form of ATP through the process of cellular respiration, which involves the breakdown of glucose and other nutrients to release energy for the plant's metabolic activities.

Where does respiration take place in animals?

Respiration in animals typically takes place in specialized organs called lungs. In the lungs, oxygen is taken in from the air and carbon dioxide is released from the body. However, in some animals like fish, respiration occurs through gills where oxygen is extracted from water. Additionally, some simple animals can perform respiration through their skin or other specialized structures.

How does the respiratory system in humans work?

The respiratory system in humans works by bringing in oxygen from the air through the process of breathing. The air enters the body through the nose or mouth, travels down the trachea into the lungs where it reaches tiny air sacs called alveoli. In the alveoli, oxygen is transferred into the bloodstream while carbon dioxide is removed from the body through exhalation. This process is facilitated by the diaphragm and muscles in the chest that help expand and contract the lungs to inhale and exhale air.

What is the purpose of respiration?

The purpose of respiration is to take in oxygen from the air and release carbon dioxide from the body. This process allows the body to generate energy by breaking down glucose in the presence of oxygen through cellular respiration, providing the necessary fuel for cellular activities and maintaining life functions.

How are oxygen and carbon dioxide exchanged during respiration?

During respiration, oxygen is inhaled through the respiratory system and enters the lungs, where it diffuses from the alveoli into the bloodstream. It then binds to hemoglobin in red blood cells and is transported to cells throughout the body. Meanwhile, carbon dioxide, a waste product of cellular respiration, diffuses from the cells into the bloodstream and is carried back to the lungs. In the lungs, carbon dioxide is released from the blood into the alveoli and exhaled out of the body. This exchange of gases occurs through the process of diffusion, driven by differences in their concentrations between the lungs and the bloodstream.

What happens to glucose during cellular respiration?

During cellular respiration, glucose is broken down into carbon dioxide and water in a series of enzymatic reactions. This process generates energy in the form of adenosine triphosphate (ATP), which the cell can use to fuel various cellular activities. The breakdown of glucose in cellular respiration occurs in multiple stages, including glycolysis, the citric acid cycle, and oxidative phosphorylation, ultimately leading to the production of ATP and the release of waste products like carbon dioxide and water.

What are the waste products of respiration?

The waste products of respiration are carbon dioxide and water. These byproducts are produced during cellular respiration, a process that occurs in cells to generate energy in the form of ATP. Carbon dioxide is a gas that is exhaled by organisms, while water is usually eliminated through urine, sweat, or other bodily fluids.

How is respiration influenced by physical activity?

Physical activity increases respiration by stimulating the need for more oxygen in the body. When we engage in exercise, our muscles require extra oxygen to produce energy for movement, prompting the respiratory system to take in more air to meet this demand. This results in faster and deeper breathing to supply the muscles with the adequate oxygen needed to sustain activity. Additionally, physical activity helps to improve respiratory efficiency and strengthen respiratory muscles over time, enhancing overall lung function and capacity.