Cells produce the energy they need to survive through the process of
A.
cellular respiration.
B.
cellular specialization.
C.
cellular differentiation.
D.
cellular transport.
A. cellular respiration.
Which scenario would lead to the biggest increase in a rabbit population?
A.
increase in food supply and decrease in predators
B.
increase in food supply and predators
C.
decrease in food supply and increase in predators.
D.
decrease in food supply and predators
A. increase in food supply and decrease in predators
Increasing food supply would allow the existing rabbit population to have more resources for growth and reproduction, and decreasing predators would reduce the mortality rate of the rabbits, leading to a bigger increase in the rabbit population.
Kim is creating a model to show how energy moves through an ecosystem. Which of the following could she use to best describe the role that plants play in this process?
A.
Plants remove oxygen from other organisms.
B.
Plants create carbon dioxide for other organisms.
C.
Plants use sunlight to create food for other organisms.
D.
Plants increase the water temperature for other organisms.
C. Plants use sunlight to create food for other organisms.
Plants play a crucial role in energy flow in ecosystems by converting sunlight into chemical energy through photosynthesis, which is then consumed by other organisms in the food chain.
Which of the following is an abiotic limiting factor of a population?
A.
a predator
B.
disease
C.
food
D.
climate
D. climate
Abiotic factors are non-living factors that can limit the growth of a population, and climate (temperature, precipitation, sunlight, etc.) is an example of an abiotic factor that can impact population dynamics.
Scientists find that a species is going extinct due to human population growth near its habitat. Which of these is NOT a way habitat loss can hurt a species?
A.
The species can have less space to find food.
B.
The species can have less space to find shelter.
C.
The species can be hit by cars while crossing streets.
D.
The species can have to compete with humans for prey.
D. The species can have to compete with humans for prey.
While competition with humans for prey can be a factor in habitat loss impacting a species, the other options more directly relate to the negative effects of habitat loss on a species.
All plants and animals need to obtain energy from their environment in order to grow. How is this process different for plants than it is for animals?
A.
Plants obtain their energy from sunlight, while animals obtain their energy by eating plants or other animals.
B.
Plants need several multiple sources of energy, while animals only need one source of energy.
C.
Plants convert the energy they obtain to sugar, while animals convert the energy they obtain to salt.
D.
Plants obtain their energy through their roots, while animals obtain their energy through their mouths.