BIOLOGY 100: EXAM #1 (EKDALE, SDSU) QUESTIONS AND
CORRECT 100% VERIFIED ANSWERS UPDATED 2025/2026 BEST
GRADED A+ FOR SUCCESS
Community - CORRECT ANSWERS All the different populations that live together in an
area
Effects of climate change on species interactions - CORRECT ANSWERS Mutualism,
parasitism/pathogens, and competition
Mutualism - CORRECT ANSWERS A symbiotic relationship between two species in
which both species benefit.
Parasitism/Pathogens - CORRECT ANSWERS A relationship between two organisms of
different species where one benefits and the other is harmed
Competition - CORRECT ANSWERS The struggle between organisms to survive in a
habitat with limited resources
Keystone species - CORRECT ANSWERS A species on which other species in an
ecosystem largely depend, such that if it were removed the ecosystem would change
drastically.
Biodiversity - CORRECT ANSWERS The variety of life in the world or in a particular
habitat or ecosystem.
Ecosystem - CORRECT ANSWERS A biological community of interacting organisms and
their physical environment.
Scientific Method steps - CORRECT ANSWERS Observation, Hypothesis, Experiment,
Conclusion
, BIOLOGY 100: EXAM #1 (EKDALE, SDSU) QUESTIONS AND
CORRECT 100% VERIFIED ANSWERS UPDATED 2025/2026 BEST
GRADED A+ FOR SUCCESS
Producers - CORRECT ANSWERS Organisms that produce their own food using the
sun's energy.
Photosynthesis - CORRECT ANSWERS Conversion of light energy from the sun into
chemical energy.
Ingredients:
-Energy from sunlight
-Water
-Carbon dioxide
Products:
-Sugar
-Oxygen
Chloroplast - CORRECT ANSWERS Organelle where photosynthesis takes place.
Chlorophyll is a pigment that absorbs sunlight used in the chloroplast.
Consumers - CORRECT ANSWERS An organism that obtains energy and nutrients by
feeding on other organisms.
Cellular respiration - CORRECT ANSWERS Process that releases energy by breaking
down glucose and other food molecules in the presence of oxygen.
Ingredients:
-Sugar
-Oxygen
Products:
-Carbon dioxide
CORRECT 100% VERIFIED ANSWERS UPDATED 2025/2026 BEST
GRADED A+ FOR SUCCESS
Community - CORRECT ANSWERS All the different populations that live together in an
area
Effects of climate change on species interactions - CORRECT ANSWERS Mutualism,
parasitism/pathogens, and competition
Mutualism - CORRECT ANSWERS A symbiotic relationship between two species in
which both species benefit.
Parasitism/Pathogens - CORRECT ANSWERS A relationship between two organisms of
different species where one benefits and the other is harmed
Competition - CORRECT ANSWERS The struggle between organisms to survive in a
habitat with limited resources
Keystone species - CORRECT ANSWERS A species on which other species in an
ecosystem largely depend, such that if it were removed the ecosystem would change
drastically.
Biodiversity - CORRECT ANSWERS The variety of life in the world or in a particular
habitat or ecosystem.
Ecosystem - CORRECT ANSWERS A biological community of interacting organisms and
their physical environment.
Scientific Method steps - CORRECT ANSWERS Observation, Hypothesis, Experiment,
Conclusion
, BIOLOGY 100: EXAM #1 (EKDALE, SDSU) QUESTIONS AND
CORRECT 100% VERIFIED ANSWERS UPDATED 2025/2026 BEST
GRADED A+ FOR SUCCESS
Producers - CORRECT ANSWERS Organisms that produce their own food using the
sun's energy.
Photosynthesis - CORRECT ANSWERS Conversion of light energy from the sun into
chemical energy.
Ingredients:
-Energy from sunlight
-Water
-Carbon dioxide
Products:
-Sugar
-Oxygen
Chloroplast - CORRECT ANSWERS Organelle where photosynthesis takes place.
Chlorophyll is a pigment that absorbs sunlight used in the chloroplast.
Consumers - CORRECT ANSWERS An organism that obtains energy and nutrients by
feeding on other organisms.
Cellular respiration - CORRECT ANSWERS Process that releases energy by breaking
down glucose and other food molecules in the presence of oxygen.
Ingredients:
-Sugar
-Oxygen
Products:
-Carbon dioxide
