Keystone Biology: Ecology and Homeostasis Flashcards
6 cards from real Keystone Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Keystone Biology: Ecology and Homeostasis flashcards as text
Which term describes the relationship where one organism benefits and the other is harmed?
Answer: Parasitism
Parasitism involves one organism (the parasite) benefiting at the expense of the host.
What is the carrying capacity of an ecosystem?
Answer: The maximum population size an environment can support
Carrying capacity is the largest population size that an environment can sustainably support given available resources.
Which type of symbiosis benefits both organisms involved?
Answer: Mutualism
In mutualism, both organisms benefit from the relationship, such as bees pollinating flowers while collecting nectar.
What is the primary source of energy for most ecosystems on Earth?
Answer: Sunlight
Sunlight is captured by producers through photosynthesis and forms the energy base for most food webs.
What happens to a population when birth rate exceeds death rate?
Answer: The population grows
When births outnumber deaths, the net population size increases over time.
Which process allows cells to release energy from glucose?
Answer: Cellular respiration
Cellular respiration breaks down glucose to produce ATP, the cell's usable form of energy.
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