BIOLOGY 100 EXAM #1 (EKDALE, SDSU) ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

BIOLOGY 100 EXAM #1 (EKDALE, SDSU) ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS What is Biology characterized by? - Answer -Reproduction, growth and development, cells, order, energy use, response to the environment, and evolution. Ecology - Answer -Scientific study of interactions among organisms and between biotic (living) and abiotic (nonliving) organisms and their environment How does the ecosystem process energy? - Answer -Energy flows into the ecosystem from the sun, solar energy is then converted into chemical energy from producers. Biogeochemical cycling - Answer -Cycling of nutrients from abiotic to biotic sources through biological, geological, and chemical processes. Greenhouse effect - Answer -Natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases Consequences of global warming - Answer -Warming waters, rising sea levels, extreme weather events, and ocean acidification.Carbon Residence Time - Answer -The amount of time carbon stays in the atmosphere. Approximately 200 years Population - Answer -A group of individuals that belong to the same species and live in the same area Population ecology - Answer -The study of factors that cause populations to increase or decrease. Human population dramatically increased in the late 1800's with improved sanitation, nutrition, and medical care. Exponential growth - Answer -Rapid population increase due to an abundance of resources Logistic growth - Answer -Growth pattern in which a population's growth rate slows or stops following a period of exponential growth Carrying capacity - Answer -Largest number of individuals of a population that a environment can support. The carrying capacity for humans is expected to reach 10 billion people by 2100. Climate change would reduce this capacity. Community - Answer -All the different populations that live together in an area Effects of climate change on species interactions - Answer -Mutualism, parasitism/pathogens, and competition Mutualism - Answer -A symbiotic relationship between two species in which both specie