Podcast
Questions and Answers
What is produced during the light-dependent reactions of photosynthesis?
What is produced during the light-dependent reactions of photosynthesis?
- Water (H₂O)
- Glucose (C₆H₁₂O₆)
- Oxygen (O₂) (correct)
- Carbon dioxide (CO₂)
Which statement aligns with Rudolf Virchow's position on cell theory?
Which statement aligns with Rudolf Virchow's position on cell theory?
- All cells are identical in structure.
- All cells have a nucleus.
- All cells arise from preexisting cells. (correct)
- All cells can spontaneously generate.
During anaerobic respiration in muscles, what is the end product?
During anaerobic respiration in muscles, what is the end product?
- Ethanol
- Acetic acid
- Lactic acid (correct)
- Carbon dioxide
Which of the following best describes living versus nonliving characteristics?
Which of the following best describes living versus nonliving characteristics?
What is significant about the structure of a phospholipid bilayer in cell membranes?
What is significant about the structure of a phospholipid bilayer in cell membranes?
Flashcards
Photosynthesis
Photosynthesis
The process by which plants use sunlight, water, and carbon dioxide to produce glucose (sugar) and oxygen. It consists of two main reactions: the light-dependent reaction and the light-independent reaction.
Cell Theory
Cell Theory
A fundamental theory in biology stating that all living organisms are composed of cells, and that all cells arise from preexisting cells.
ATP Energy Cycle
ATP Energy Cycle
The process by which energy is stored and released in cells using adenosine triphosphate (ATP). Energy is stored when a phosphate group is added to ADP, forming ATP. Energy is released when a phosphate group is removed from ATP.
Cancer Cells
Cancer Cells
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Cell Membranes
Cell Membranes
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Study Notes
Photosynthesis
- Photosynthesis involves two key reactions:
- Light-dependent: Produces oxygen (O₂).
- Light-independent: Produces glucose (C₆H₁₂O₆).
Cell Theory
- Rudolf Virchow proposed that all cells originate from pre-existing cells.
ATP Energy Cycle
- Energy is stored when a phosphate group joins ADP to form ATP.
- Energy is released when a phosphate group detaches from ATP.
Living vs. Nonliving
- Growth is a characteristic of life. Non-living things, like pebbles, do not grow.
Cell Division
- Cancer cells divide uncontrollably, ignoring signals to stop dividing.
Experiment Design
- Control variables in experiments to isolate how temperature affects yeast respiration.
Viruses
- Viruses are classified as nonliving due to lacking:
- Membrane-bound organelles
- Independent metabolic activity
Respiration
- Aerobic respiration produces 38 ATPs from glucose.
- Anaerobic respiration produces 2 ATPs from glucose.
- Lactic acid is a byproduct of anaerobic respiration in muscle cells.
Biomolecules
- Starches are long polymers that dissolve poorly (insoluble) in water.
- Lipids are nonpolar molecules (do not dissolve in water).
Cell Membranes
- Cell membranes consist of a phospholipid bilayer with hydrophilic heads and hydrophobic tails.
- Cell membranes regulate what molecules enter and leave the cell.
Miscellaneous
- The optimal temperature for catalase activity is 25°C.
- Plant cells contain chloroplasts, mitochondria, and cell walls.
- Animal cells lack chloroplasts and cell walls.
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Description
Test your knowledge on key biological concepts including photosynthesis, cell theory, ATP energy cycle, and more. This quiz covers essential principles such as the differences between living and nonliving entities and explores various cellular processes.
