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Matter is comprised of
matter can turn into energy
matter and energy cannot be created or destroyed
This is a solid, liquid, or gas that takes up space
all of the above
This describes a force that can change substances
all of the above
This can be created or destroyed.
all of the above
none of the above
What is mass?
The more mass something has, the more it weighs on earth.
The more mass something has, the more atoms it has.
True or False: forms of energy can be transformed into different kinds of energy (e.g., light can be transformed into chemical energy). *
T or F: Ethanol (C2H5OH) has high energy bonds. *
T or F: Water (H2O) has high energy bonds. *
Both ethanol and water are clear liquids. Why does ethanol burn but water does not?
Water is wet, so it cannot burn.
Ethanol has C-C and C-H bonds but water does not.
The atoms in water cannot be rearranged into anything else.
The basic building blocks of life are *
Carbohydrates, fats and proteins are examples of what?
the process in which glucose and oxygen molecules are rearranged into CO2and H2O to acquire chemical energy.
the process in which organisms use molecules they consume to make the macromolecules needed for its cells
a molecule that can efficiently deliver chemical energy to power cellular activity
T or F: both plant and animal cells contain DNA
T or F: a plants cell wall is made of cellulose
What happens during photosynthesis?
Light energy is transformed into heat energy
Light energy is transformed into the chemical energy found in the bonds of glucose.
Chemical energy is transformed into kinetic energy
All carbon-based molecules in plants begin as
specialized proteins that enable molecular reactions to occur more quickly and easily are called
Enzymes in eukaryotic cells can rearrange glucose with what to form fatty acids and amino acids?
water in the soil
oxygen in the air
minerals like nitrogen and phosphorus
This consists of interactions between living species and the nonliving aspects of their environment
The atoms of all living organisms come from
glucose and soil minerals
water and soil minerals
oxygen and sunlight
What is biomass?
Species that are photosynthetic, such as plants, algae, and phytoplankton.
The total amount of atoms in the molecules of living organisms.
Species that must consume other species to acquire their food.
The capacity of an ecosystem to recover from a disturbance is known as...
anything that interferes with the movement of matter and the flow of energy in an ecosystem.
refers to the capacity of an ecosystem to recover from a disturbance
the variety of living organisms in an area
If there is 10,000 kg of plant biomass, it could support ____ kg of primary consumer biomass.
Animals that consume other animals are _____
The organisms consumed by primary consumers are _____
T or F: The current rates of CO2 emission are higher than the amount absorbed through photosynthesis.
Gases like CO2 ________________ the loss of heat
Check all that are disturbances to ecosystems that are happening due to rising CO2 levels
more acidic marine ecosystems
reduction in agricultural yield
This occurs when dissolved oxygen in aquatic ecosystems is reduced due to excess levels of nitrogen & phosphorus.
This refers to ecological disturbances resulting from excessive CO2 levels in the atmosphere due to human activity.