Molecules Needed By Cells
Which molecules are needed by the cell?
oxygen, glucose, amino acids
Name each body system we studied in the simulation.
digestive, respiratory, circulatory
What two molecules are required for cellular respiration, and where in the cell does it happen?
oxygen & glucose; in the mighty mitochondria!
the body's use of molecules for energy and growth
Metabolism
Which of the following molecules work TOGETHER in the cell?
oxygen, glucose, amino acids
oxygen & glucose
What would the inside of a person's body look like if they had diabetes?
There would be a lot more glucose molecules in the circulatory system because when a person has diabetes, their body isn't producing insulin. Without insulin, glucose cannot enter cells, and if glucose can't enter cells, the cells won't be able to make energy.
What is produced as a result of cellular respiration?
water, carbon dioxide, and energy!
the chemical reaction between oxygen and glucose that releases energy into cells
Cellular Respiration
What is the definition of metabolism?
the body's use of molecules for energy and growth
Why do molecules like starch and protein need to break down before entering the circulatory system and the cells?
They're too big to fit into a cell and need to be broken down into smaller glucose and amino acid molecules.
True or False: Cellular respiration ONLY happens when you're exercising.
False. It happens all the time! When you're sitting still, moving, or even sleeping.
a group of atoms joined together in a particular way
Molecule
Describe the journey oxygen takes in the body.
1. Enters through the mouth
2. Enters the respiratory system (lungs)
3. Travels through the circulatory system
4. Enters the cells
Which molecule do asthma and anemia affect?
Which molecules do diabetes and pancreas injury affect?
Asthma/anemia affect oxygen.
Diabetes/pancreas injury affect glucose (and amino acids).
What happens to molecules during a chemical reaction?
The atoms that they're made of are rearranged and bonded with new atoms. In doing this, they make a brand new substance.
the ability to make things move or change
Energy
In the simulation, list all the other molecules you observed in the cell besides oxygen, glucose, and amino acids.
water, carbon dioxide, protein
Digestive: breaks down food molecules; sends glucose and amino acids to the circulatory system.
Respiratory: takes in oxygen; transports it to the circulatory system (heart); puts out carbon dioxide.
Circulatory: transports glucose, amino acids, and oxygen through the blood vessels and heart; delivers the molecules to the cells.
Describe how cellular growth and repair happens in the cells. What is first required for this to happen?
Amino acids in the cell bond together to turn back into proteins. These proteins then go to different parts of the body to repair or grow cells. Cellular respiration is needed for cellular growth/repair to happen because it produces energy.
1. a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms
2. a molecule that organisms get from the air or water around them and use to release energy
1. Glucose
2. Oxygen