bio Flashcards
What is a Calorie equal to?
A Calorie is equal to a kilocalorie.
The term ‘Calorie’ with a capital ‘C’ refers to kilocalories, which are commonly used in food energy measurement.
What is the ultimate source of energy that Mariana receives when she eats an orange?
The light energy that originates from the sun provides the energy to grow oranges, which contain macromolecules.
This highlights the connection between solar energy and the energy stored in food.
How is chemical energy in food released for cellular use?
Chemical bonds in food molecules are broken, releasing energy and allowing cells to use the energy to make ATP.
This process is essential for cellular metabolism.
What does Natasha’s model of cellular respiration show?
An aerobic pathway consisting of glycolysis, the Krebs cycle, and the electron transport chain.
This model outlines the stages of cellular respiration when oxygen is present.
Which statement explains how the human body obtains energy without overheating?
The breakdown of glucose occurs in many small steps.
This gradual process prevents excessive heat production.
What is another way the human body prevents overheating during energy production?
Low-temperature breakdown oxidation of glucose is enabled by enzymes that catalyze specific reactions.
Enzymes play a critical role in regulating metabolic reactions.
What does photosynthesis use from the atmosphere?
Photosynthesis uses carbon dioxide from the atmosphere and produces oxygen.
This process is essential for plant growth and oxygen production.
What does cellular respiration use to release energy from food?
Cellular respiration uses oxygen to release energy from food and produces carbon dioxide as a byproduct.
This process is vital for energy production in aerobic organisms.
