Photosynthesis
What are the reactants of photosynthesis?
Carbon dioxide, water, sunlight
Name one biogeochemical cycle.
Carbon cycle, nitrogen cycle, and water cycle
What are the main phases of the cell cycle?
Interphase, mitosis, cytokinesis
What is the role of decomposers in an ecosystem?
To break down dead matter and recycle nutrients.
What is carrying capacity?
The maximum population size an environment can sustain.
What is the main product of photosynthesis?
Glucose
What process releases carbon dioxide into the atmosphere?
Respiration or combustion
During which phase does DNA replication occur?
S phase of interphase
Which trophic level has the least amount of energy available?
Tertiary consumers
Define a density-dependent limiting factor.
A factor affected by population size, such as competition or disease.
In which organelle does photosynthesis occur?
Chloroplast
How do plants contribute to the water cycle?
Transpiration
What is the purpose of the G1 phase?
Cell growth and preparation for DNA replication
What is the term for a relationship where one species benefits while the other is unaffected?
commensalism
Give an example of predator-prey relationship.
lion and zebra
What are the two main products of light-dependent reactions?
ATP and NADPH
What is nitrogen fixation?
The process where nitrogen gas is converted into ammonia or usable forms by bacteria.
What checkpoint ensures DNA is properly replicated?
G2 checkpoint
What is the term for a group of organisms of the same species living in the same area?
Population.
What is exponential growth?
Rapid population increase when resources are abundant.
Explain the role of the Calvin cycle in photosynthesis.
It converts carbon dioxide into glucose.
Describe one human activity that disrupts the carbon cycle.
Burning fossil fuels
What is the difference between the cell cycle in normal cells and cancer cells?
Cancer cells bypass checkpoints and divide uncontrollably.
What is the difference between a food web and a food chain?
Food web shows multiple interconnected food chains.
How does habitat destruction affect population dynamics?