5.2 Quiz

Label each level of the biomass pyramid. Here is the food chain it's based off of:

Algae -> Tadpole -> Water beetle -> Bass

a

b

c

d

Algae

Water beetles

Bass

Tadpoles

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Organize these options into the right categories

Groups:

(a) Describes mass or has mass

,

(b) Describes energy transfer / storage

• Kilograms (kg)

• Temp. change

• Carbohydrates, proteins, and fats

• Motion

• Atoms

• Calories

• Molecules

• Bonds between atoms

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Reorder the following showing how energy would transfer through a food chain.

Left = beginning of food chain Right = end of food chain

• EW temp. change of carnivore

• EW bonds in fat molecules of herbivore

• EW Light of sun

• EW bonds in molecule of sugar

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Biomass and energy pyramids often follow the 10% rule. That rule means that only 10% of the energy or mass...

• moves up to the next level of the food chain

• stays at the bottom of the food chain

• transforms from energy to matter (or from matter to energy)

• is lost or destroyed during an interaction

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The energy stored within a food chain is found within...

• Organic molecules and oxygen inside the organisms

• Heat and atoms of the organisms

• Carbon dioxide (CO2) and water (H2O) inside the organisms

• Stable bonds inside of inorganic molecules in the organisms

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Atoms leave a biomass pyramid when ​ (a)   are mixed and burned with oxygen in order to make ​ (b)   . This happens when one organism eats another and uses the process of ​ (c)   to get energy out of the thing being eaten. This makes it so that less mass can move up to the next level of the food chain.

• organic molecules
• CO2 and H2O
• cellular respiration
• photosynthesis
• biosynthesis
• inorganic molecules

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Biomass and energy pyramids follow the same trends in a food chain. That is because ​ (a)   is stored inside of​ molecules like ​ (b)   which help make up living things. Burning those molecules, with the help of ​ (c)   , means that mass that was inside an organism will now leave as ​ (d)   . It also means that energy has been ​ released from the bonds of those molecules into the environment as ​ (e)   . That makes it so less energy can travel up the food chain as well since it's no longer trapped inside organic molecules.

• energy
• oxygen
• CO2 and H2O
• Carbohydrates, Fats, and Proteins
• heat
• Nutrients and Water
• Soil

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Match the expected amount of energy found at each level of this energy pyramid

a

b

c

60,000 Calories

2,400 Calories

60 Calories

700 Calories

800 Calories

6,000 Calories

300 Calories

500 Calories

1,200 Calories

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Biologists often say that matter​ (a)   in a food chain because organisms can break-apart molecules and turn them into new ones. On the other hand, energy​ (b)   in a food chain because it enters as​ energy with ​ (c)   and leaves as energy with​ (d)   .

• recycles
• flows one way
• light
• temperature change
• is created
• is destroyed
• makes energy
• makes new atoms
• electricity

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Categorize the following by the process they belong to

Groups:

(a) Biosynthesis

,

(b) Photosynthesis

,

(c) Decomposition

,

(d) Cellular Respiration

• Use oxygen to burn organic molecules, releasing energy from them for survival

• Without this, organisms couldn't build bigger molecules to grow and survive

• Use energy from the sun to turn CO2 and H2O into glucose and O2

• Without this, organisms couldn't store energy in molecules

• Without this, organisms couldn't get energy from their food

• Without this, nutrients wouldn't be released from dead things for organisms to use

• Break-down dead organisms to release nutrients into environment

• Use nutrients and glucose to make proteins, fats, and carbs

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