25 Questions
What can be compared to the living cell?
Atom
What is the living cell considered the cornerstone of?
Organisms
What is the atom comparable to in the context of living things?
Cell
What is the smallest part of matter?
Atom
What is constructed from the living cell?
General Organisms
What is the main source of energy for the formation of organic compounds?
Sunlight
Where does the energy needed to form organic compounds come from?
Sunlight
What is the source of energy for all life in the universe?
Sunlight
What is the primary energy source for the formation of organic compounds on Earth?
Sunlight
What is the energy source that drives the formation of organic compounds?
Sunlight
What do heterotrophic cells get from another food source?
Glucose
What is the function of CO2 in heterotrophic cells?
Not used as a food source
What do heterotrophic cells require to make their food?
Complex carbon sources
What is unique about the carbon source of heterotrophic cells?
It is complex
Why do heterotrophic cells need another food source?
Because they cannot make their own food
What is the reason for ATP being less stable than ADP?
Due to the presence of three negative charges that are repulsive.
What is broken down from the nutrients we eat into smaller molecules?
Less than thirty small molecules including glucose, fatty acids, and others.
How many nitrogen bases are broken down from the nutrients we eat?
5
What is not a molecule broken down from the nutrients we eat?
Vitamin D
How many amino acids are broken down from the nutrients we eat?
20
What is an example of an intra-organism reaction?
Muscle contraction
What occurs in intracellular manufacturing?
Synthesis of proteins
What is an example of transmission of substances between cells?
Hormone regulation
Which of the following is NOT an example of an intra-organism reaction?
Electron transport
What is the general term for reactions that occur within living organisms?
Intra-organism reactions
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
Explore the basics of cellular life, including the role of sunlight as the primary energy source and the difference between autotrophic and heterotrophic cells.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
