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Questions and Answers
What can be compared to the living cell?
What can be compared to the living cell?
What is the living cell considered the cornerstone of?
What is the living cell considered the cornerstone of?
What is the atom comparable to in the context of living things?
What is the atom comparable to in the context of living things?
What is the smallest part of matter?
What is the smallest part of matter?
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What is constructed from the living cell?
What is constructed from the living cell?
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What is the main source of energy for the formation of organic compounds?
What is the main source of energy for the formation of organic compounds?
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Where does the energy needed to form organic compounds come from?
Where does the energy needed to form organic compounds come from?
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What is the source of energy for all life in the universe?
What is the source of energy for all life in the universe?
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What is the primary energy source for the formation of organic compounds on Earth?
What is the primary energy source for the formation of organic compounds on Earth?
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What is the energy source that drives the formation of organic compounds?
What is the energy source that drives the formation of organic compounds?
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What do heterotrophic cells get from another food source?
What do heterotrophic cells get from another food source?
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What is the function of CO2 in heterotrophic cells?
What is the function of CO2 in heterotrophic cells?
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What do heterotrophic cells require to make their food?
What do heterotrophic cells require to make their food?
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What is unique about the carbon source of heterotrophic cells?
What is unique about the carbon source of heterotrophic cells?
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Why do heterotrophic cells need another food source?
Why do heterotrophic cells need another food source?
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What is the reason for ATP being less stable than ADP?
What is the reason for ATP being less stable than ADP?
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What is broken down from the nutrients we eat into smaller molecules?
What is broken down from the nutrients we eat into smaller molecules?
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How many nitrogen bases are broken down from the nutrients we eat?
How many nitrogen bases are broken down from the nutrients we eat?
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What is not a molecule broken down from the nutrients we eat?
What is not a molecule broken down from the nutrients we eat?
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How many amino acids are broken down from the nutrients we eat?
How many amino acids are broken down from the nutrients we eat?
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What is an example of an intra-organism reaction?
What is an example of an intra-organism reaction?
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What occurs in intracellular manufacturing?
What occurs in intracellular manufacturing?
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What is an example of transmission of substances between cells?
What is an example of transmission of substances between cells?
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Which of the following is NOT an example of an intra-organism reaction?
Which of the following is NOT an example of an intra-organism reaction?
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What is the general term for reactions that occur within living organisms?
What is the general term for reactions that occur within living organisms?
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Study Notes
Living Cell
- The living cell is the cornerstone of the construction of general organisms, just as the atom is the smallest part of matter.
Energy Source for Life
- Sunlight is the main source of energy for all life in the universe.
- Energy from sunlight is needed to form organic compounds.
Heterotrophic Cells
- These cells cannot use CO2 as their food or make their food from it.
- They need to obtain carbon from another food source, such as glucose made by other cells.
- Heterotrophic cells rely on intra-organism reactions, including:
- Muscle contraction
- Nerve delivery of impulses
- Intracellular manufacturing
- Transmission of substances between cells
ATP and ADP
- ATP is less stable than ADP due to three negative charges that are repulsive.
- ATP is a high-energy molecule that is used to fuel cellular reactions.
Nutrient Breakdown
- The countless nutrients we eat over days and years break down into approximately thirty small molecules.
- These molecules include:
- Glucose
- Several fatty acids
- Glycerol
- Twenty amino acids
- Five nitrogen bases
- Ribose
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Description
Explore the basics of cellular life, including the role of sunlight as the primary energy source and the difference between autotrophic and heterotrophic cells.
