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- Multiple ChoicePlease save your changes before editing any questions.
Matter is comprised of
energy
atoms
sound waves
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matter can turn into energy
true
false
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matter and energy cannot be created or destroyed
true
false
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This is a solid, liquid, or gas that takes up space
matter
energy
all of the above
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This describes a force that can change substances
matter
energy
all of the above
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This can be created or destroyed.
matter
energy
all of the above
none of the above
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What is mass?
The more mass something has, the more it weighs on earth.
The more mass something has, the more atoms it has.
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True or False: forms of energy can be transformed into different kinds of energy (e.g., light can be transformed into chemical energy). *
True
false
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T or F: Ethanol (C2H5OH) has high energy bonds. *
true
false
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T or F: Water (H2O) has high energy bonds. *
true
false
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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.
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The basic building blocks of life are *
cells
atoms
molecules
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Carbohydrates, fats and proteins are examples of what?
organs
organ systems
macromolecules
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the process in which glucose and oxygen molecules are rearranged into CO2and H2O to acquire chemical energy.
biosynthesis
cellular respiration
atp
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the process in which organisms use molecules they consume to make the macromolecules needed for its cells
cellular respiration
biosynthesis
ATP
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a molecule that can efficiently deliver chemical energy to power cellular activity
chemical energy
ATP
mitochondria
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T or F: both plant and animal cells contain DNA
true
false
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T or F: a plants cell wall is made of cellulose
true
false
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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
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All carbon-based molecules in plants begin as
amino acids
fatty acids
glucose molecule
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specialized proteins that enable molecular reactions to occur more quickly and easily are called
substrates
polymers
enzymes
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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
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This consists of interactions between living species and the nonliving aspects of their environment
biodiversity
biomass
ecosystems
carrying capacity
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The atoms of all living organisms come from
glucose and soil minerals
water and soil minerals
oxygen and sunlight
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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.
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The capacity of an ecosystem to recover from a disturbance is known as...
biomass
biodiversity
resilience
carrying capacity
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biodiversity is..
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
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If there is 10,000 kg of plant biomass, it could support ____ kg of primary consumer biomass.
100,000
10,000
1,000
100
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Animals that consume other animals are _____
producers
secondary consumers
primary consumers
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The organisms consumed by primary consumers are _____
producers
secondary consumers
primary consumers
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T or F: The current rates of CO2 emission are higher than the amount absorbed through photosynthesis.
true
false
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Gases like CO2 ________________ the loss of heat
speed up
slow
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Check all that are disturbances to ecosystems that are happening due to rising CO2 levels
floods
droughts
more acidic marine ecosystems
reduction in agricultural yield
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This occurs when dissolved oxygen in aquatic ecosystems is reduced due to excess levels of nitrogen & phosphorus.
Eutrophication
climate change
greenhouse gases
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This refers to ecological disturbances resulting from excessive CO2 levels in the atmosphere due to human activity.
greenhouse gases
climate change
Milankovitch Cycles
Eutrophication