Podcast
Questions and Answers
What does metabolism refer to?
What does metabolism refer to?
All of the biochemical reactions by which complex molecules taken into an organism are broken down to produce energy.
Which of the following describes catabolic reactions?
Which of the following describes catabolic reactions?
- Oxidative breakdown of larger complex molecules (correct)
- Energy is consumed to synthesize substances (correct)
- Building-up aspect of metabolism
- Only involves amino acids
Catabolism involves the synthesis of proteins.
Catabolism involves the synthesis of proteins.
False (B)
What is the metabolic process where energy is consumed to synthesize substances called?
What is the metabolic process where energy is consumed to synthesize substances called?
Where is ATP manufactured?
Where is ATP manufactured?
Which factor does NOT affect Basal Metabolic Rate (BMR)?
Which factor does NOT affect Basal Metabolic Rate (BMR)?
Fasting can increase Basal Metabolic Rate (BMR).
Fasting can increase Basal Metabolic Rate (BMR).
The minimal caloric requirement needed to sustain life in a resting state is called __________.
The minimal caloric requirement needed to sustain life in a resting state is called __________.
What is the amount of free energy in the third phosphate bond of high-energy ATP molecules?
What is the amount of free energy in the third phosphate bond of high-energy ATP molecules?
Study Notes
Metabolism
- Metabolism is the sum of all chemical reactions that occur in a living organism.
Catabolic Reactions
- Catabolic reactions break down large molecules into smaller ones, releasing energy.
- This process is exergonic, meaning energy is released.
Anabolic Reactions
- Anabolic reactions synthesize large molecules from smaller ones, requiring energy.
- This process is endergonic, meaning energy is required.
ATP
- ATP (adenosine triphosphate) is a high-energy molecule that stores and releases energy for cellular processes.
- 8000 calories of energy are released under standard conditions when ATP is broken down to ADP (adenosine diphosphate).
- 8000 calories are required to synthesize ATP from ADP.
Mitochondria
- Mitochondria are the organelles where ATP is manufactured during aerobic respiration. They are often called the "powerhouses of the cell."
Basal Metabolic Rate (BMR)
- BMR is the minimum amount of energy required to sustain life in a resting state.
- It is the amount of calories your body would burn if you slept for 24 hours.
Factors Affecting BMR
- Factors that increase BMR: Fever, stress, heat, and cold.
- Factors that decrease BMR: Fasting, starvation.
- Factors that influence BMR: Age, height, growth, and body composition.
- Higher BMR:
- Younger individuals
- Taller, thinner individuals
- Children and pregnant individuals
- Individuals with more lean tissue
- Lower BMR:
- Older individuals
- Individuals with more fat tissue
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Description
Explore the essential concepts of metabolism including catabolic and anabolic reactions, the role of ATP, and the function of mitochondria. This quiz will test your understanding of how energy is produced and consumed in living organisms. Delve into the details of Basal Metabolic Rate and discover the significance of these processes!
