Metabolism 1
Amino acids/ proteins allow your cells to:
repair, replace, and reproduce
The building blocks of starches are
glucose
Elisa is feeling tired all the time because she has a medical condition called
diabetes
A student thinks that the human body only works properly when cells are getting molecules from food and molecules from air. Is the student correct?
Yes, the body only works when cells get molecules from food and molecules from air.
Doctors tested a patient and found that his cells contained normal levels of oxygen and glucose molecules, and no starch molecules. Will this patient be able to exercise normally?
Yes, the glucose and oxygen molecules can react together to release energy for the body to function.
Cellular respiration is:
the production of ATP on the cellular level
What is the correct order from smallest to largest?
1. cell, molecule, organelle
2. molecule, organelle, cell
molecule, organelle, cell
Which 2 body systems are involved in moving air from the nose to your cells of your body?
circulatory and respiratory
Which body system transports molecules to and from the cells of the body?
circulatory system
The chemical reaction between glucose & oxygen that releases energy is
cellular respiration
Many systems of the body are interconnected. Why might a disorder that affects the nervous system cause a person to have difficulty walking?
The nervous system disorder disrupts the ability of the brain to send impulses to the muscles, telling them to move.
Which body system takes in food and breaks it down?
digestive system
Put the steps that oxygen takes to get to the cells in order.
The body takes in oxygen through the nose. - The oxygen goes into the lungs. - The oxygen passes the alveoli into the circulatory system. - The circulatory system carries oxygen to the cells.
Which organelle uses glucose and oxygen to make energy?
mitichondria
Stella’s respiratory system is not working well. Why is this a problem for her ability to exercise?
Her cells will not work well when they have low levels of oxygen.
When atoms rearrange to form new substances
chemical reaction
The body's use of molecules for energy and growth is called
metabolism
A patient has been eating healthy foods, but her respiratory system is not working as well as it usually does. Can this patient still exercise normally?
No, her cells do not have enough oxygen to react with glucose and release energy.
Asthma is a condition in which it can be very hard for a person to breathe in enough air. Would it also be difficult for someone with asthma to exercise?
Yes, it will be difficult for a person with asthma to exercise because his cells need molecules from air.
Some problems with the digestive system make it very difficult for the body to digest enough food. Why would it be harder to exercise when you have a digestion problem like this?
Your cells would have molecules from air, but would not get enough molecules from food.
Alonzo went hiking up a local mountain. The lack of oxygen at such a high altitude on the mountain caused his body to respond. Which of the following accurately describes how Alonzo’s systems worked to maintain homeostasis at such a high altitude?
1. He breathed faster, which allowed more oxygen into the lungs, and through the bloodstream, where it is delivered to the cells.
2. He breathed slower, which allowed more oxygen into the lungs, and through the bloodstream, where it is delivered to the cells.
He breathed faster, which allowed more oxygen into the lungs, and through the bloodstream, where it is delivered to the cells.
Jamal ate a meal of rice before seeing his doctor. Rice is made of mostly starch molecules. Jamal has been feeling tired a lot, so his doctor gave him a test that found that Jamal’s cells contained normal levels of oxygen and low levels of glucose. Does this explain why Jamal has been feeling tired?
Yes, Jamal’s respiratory system is working, but his digestive system is not breaking down starch molecules into glucose for his cells.
The test report below shows the level of molecules in different parts of the patient's body. How would you expect this patient to do on an exercise test?
He did poorly; his digestive system is not breaking down molecules from food into glucose.
Doctors tested a patient to find out what molecules were in her cells. Her cells contained normal levels of oxygen molecules, low levels of amino acid molecules, and low levels of glucose molecules. Will this patient be able to exercise normally?
No, her cells need glucose to react with oxygen to release enough energy to exercise
The space exploration program has hired you for advice on how to keep astronauts healthy in the space shuttle. How can the program’s doctors make sure the astronauts’ bodies work well enough to exercise in space?
The doctors could make sure the astronauts’ cells are getting the molecules they need from food and air.