Memorizing Terms Flashcards
(22 cards)
Which of the following best explains why our heart rate increases during exercise?
To pump more oxygen-rich blood to our muscles
What term describes the process that occurs in our cells to produce energy during exercise?
Cellular respiration
Which of the following is NOT a typical bodily response to exercise?
Decreased body temperature
In the chemical equation for cellular respiration, which of these is a reactant?
Food
How is the process of burning food outside the body similar to how our bodies use food for energy?
Both processes produce carbon dioxide
Which of the following best describes why we breathe faster during exercise?
To take in more oxygen for cellular respiration
Why is burning food outside the body similar to food reacting inside the body?
Both the reactants and products are the same
What is similar between the food molecules?
They all contain carbon, hydrogen, and oxygen
Which of the following is untrue about food molecules?
They all can link together to form more complex molecules
Which statement is true?
The more calories you eat, the longer you have to exercise to use up that energy.
Why do fats release more energy than carbohydrates or proteins?
The number, type, and arrangement of the atoms in the molecules are different
Why are carbohydrates, proteins, and fats the only things considered food?
They provide energy and building materials for the body
Food + ___A___ ——> ___B___ + Water
A- Oxygen, B- Carbon Dioxide
Scientifically, food must
provide energy and building materials for the body
Breaking down large food molecules during digestion is done through:
Chemical reactions
If our bodies didn’t digest large food molecules, food molecules could never be small enough to travel through our _______________ to all the body’s cells.
blood cells
Starches are …
complex carbohydrates
_________________ are catalysts which speed up the process of breaking down food. They are not reactants or products in this process.
enzymes
What are the 2 reactants when breaking down a cracker?
water, starches
What is the 1 product made when breaking down a cracker?
sugars
Describe what happens to these carbs molecules when you digest them.
Carbs molecules are broken down into glucose that we use for energy.
When you were chewing crackers in the lab, the crackers were not sweet tasting when you first started chewing them. After a while, the crackers did have a sweeter taste. Why did this happen?
The crackers are made of starch which is not sweet. When the enzymes in your saliva started reacting with the crackers, some of the starch was converted to a simple sugar called glucose, which is sweet tasting.
