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BIO1500 Test 1 Exam Questions And Answers
|Latest 2025 | Guaranteed Pass
What is the heritable variation among individuals of a single population or within the species as
a whole? - Answer✔Genetic Diversity
What makes heritable variation possible? - Answer✔Genetic mutations
Natural selection acts on ________ while _______ evolve. - Answer✔Individuals; populations
A genetic mutation that allows lions to better hunt prey (gazelles) becomes prevalent in a
population. In order to survive gazelles must do what? - Answer✔Coevolve to avoid the lions
more effectively
The more genetically diverse a population the more likely... - Answer✔Favorable traits will be
selected for evolution
The population will survive
The intentional breeding for certain traits, or combination of traits is... - Answer✔Artificial
selection
What are stretches of DNA that influence traits of an individual? - Answer✔Genes
Why is a hypothesis different from a theory? - Answer✔A hypothesis is an explanation for an
observation
A theory is a well accepted hypothesis supported by extensive research
Living things use chemical reactions to... - Answer✔Store energy
Produce energy (release)
Synthesize molecules and to grow
The wastes from one living organism are food to others. This is essential to life on earth
because... - Answer✔Nutrients must be recycled
Once a chemical reaction is complete there are - Answer✔The same number of atoms
What is a population? - Answer✔A group of organisms of the same species
1|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
What is a community? - Answer✔The interactions of different populations of species
What is an ecosystem / environment? - Answer✔The interactions of populations and non living
things
What do decomposers in an ecosystem do? - Answer✔Recycle nutrients
Why might a carbon atom in you body today have been part of a dinosaur millions of years
ago? - Answer✔Because matter is never created nor destroyed just recycled / transformed
Conservation law of matter
Why has human population become a J curve over the last 200 years? - Answer✔Modern
agriculture and modern medicines
What is carrying capacity? - Answer✔The size of a population determined by environmental
resistance
Variable due to changes in the environment
The demographic transition refers to a country's change from - Answer✔High birth and death
rates to low birth and death rates
Many demographers believe that birth rates generally decrease as the level of development
increases because - Answer✔Raising children becomes more expensive
Women tend to have more influence in family planning
A population would have zero population growth if - Answer✔Births + immigration = deaths +
immigration
What factors promote declining death rates and population growth? - Answer✔Antibiotics
Vaccines
Sanitation
Agriculture
All allow kids to grow up and have kids
How did wolves manage Yellowstone and allow diverse wildlife back into the area? -
Answer✔Wolves balanced out the food chain and thus affected the food web and provided
habitats and food for other life
Energy ____ through ecosystems - Answer✔Flows
Matter is ______ ecosystems - Answer✔Cycled through
CO2 + H2O -> C6H12O6 + O2 - Answer✔Photosynthesis
C6H12O6 + O2 -> CO2 + H2O - Answer✔Cellular Respiration
2|Page
BIO1500 Test 1 Exam Questions And Answers
|Latest 2025 | Guaranteed Pass
What is the heritable variation among individuals of a single population or within the species as
a whole? - Answer✔Genetic Diversity
What makes heritable variation possible? - Answer✔Genetic mutations
Natural selection acts on ________ while _______ evolve. - Answer✔Individuals; populations
A genetic mutation that allows lions to better hunt prey (gazelles) becomes prevalent in a
population. In order to survive gazelles must do what? - Answer✔Coevolve to avoid the lions
more effectively
The more genetically diverse a population the more likely... - Answer✔Favorable traits will be
selected for evolution
The population will survive
The intentional breeding for certain traits, or combination of traits is... - Answer✔Artificial
selection
What are stretches of DNA that influence traits of an individual? - Answer✔Genes
Why is a hypothesis different from a theory? - Answer✔A hypothesis is an explanation for an
observation
A theory is a well accepted hypothesis supported by extensive research
Living things use chemical reactions to... - Answer✔Store energy
Produce energy (release)
Synthesize molecules and to grow
The wastes from one living organism are food to others. This is essential to life on earth
because... - Answer✔Nutrients must be recycled
Once a chemical reaction is complete there are - Answer✔The same number of atoms
What is a population? - Answer✔A group of organisms of the same species
1|Page
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 1:27PM. A+
What is a community? - Answer✔The interactions of different populations of species
What is an ecosystem / environment? - Answer✔The interactions of populations and non living
things
What do decomposers in an ecosystem do? - Answer✔Recycle nutrients
Why might a carbon atom in you body today have been part of a dinosaur millions of years
ago? - Answer✔Because matter is never created nor destroyed just recycled / transformed
Conservation law of matter
Why has human population become a J curve over the last 200 years? - Answer✔Modern
agriculture and modern medicines
What is carrying capacity? - Answer✔The size of a population determined by environmental
resistance
Variable due to changes in the environment
The demographic transition refers to a country's change from - Answer✔High birth and death
rates to low birth and death rates
Many demographers believe that birth rates generally decrease as the level of development
increases because - Answer✔Raising children becomes more expensive
Women tend to have more influence in family planning
A population would have zero population growth if - Answer✔Births + immigration = deaths +
immigration
What factors promote declining death rates and population growth? - Answer✔Antibiotics
Vaccines
Sanitation
Agriculture
All allow kids to grow up and have kids
How did wolves manage Yellowstone and allow diverse wildlife back into the area? -
Answer✔Wolves balanced out the food chain and thus affected the food web and provided
habitats and food for other life
Energy ____ through ecosystems - Answer✔Flows
Matter is ______ ecosystems - Answer✔Cycled through
CO2 + H2O -> C6H12O6 + O2 - Answer✔Photosynthesis
C6H12O6 + O2 -> CO2 + H2O - Answer✔Cellular Respiration
2|Page
