Life Science

Multiple Choice

What is the main topic discussed in the introduction?

• The Web of Life

• Technological Systems

• Cellular Activities

• Energy Loss

Multiple Choice

Energy stored in plants is transformed from organism to organism in a ______.

• food chain

• technological system

• cellular activity

• biosphere

Multiple Choice

What results in the large-scale cycling of matter that sustains our planet?

• Energy transfer

• Food chains

• Cellular activities

• Technological systems

Multiple Choice

How is energy cycled through the biosphere?

• Through technological systems

• Through cellular activities

• Through food chains

• Through energy loss.

Multiple Choice

Just as energy is transferred and lost as various forms, it is also cycled through the ______.

• biosphere

• food chain

• technological systems

• cellular activities

Open Ended

Where does all of our energy come from?

Multiple Choice

Through the process of ______, plants are able to take energy and store it as ______ energy in molecules known as ______.

• A) Photosynthesis, chemical, glucose

• B) Respiration, thermal, starch

• C) Fermentation, kinetic, cellulose

• D) Digestion, potential, protein

Multiple Choice

______ is the main source of energy for all animals. Animals eat plants and convert ______ into other usable forms of energy (e.g. ______) through the process of ______.

• Sunlight, carbohydrates, ATP, respiration

• Water, proteins, ADP, photosynthesis

• Soil, lipids, NADH, fermentation

• Air, vitamins, FADH2, digestion

Multiple Choice

Explain how plants and animals are inextricably linked in the cycling of energy through the biosphere.

• Through photosynthesis and respiration

• Through digestion and excretion

• Through fermentation and decomposition

• Through evaporation and condensation

Multiple Choice

What process allows plants to convert sunlight into chemical energy?

• Photosynthesis

• Respiration

• Fermentation

• Digestion

Multiple Choice

Which organism in the food chain is a primary consumer?

• Grass

• Grasshopper

• Mouse

• Owl

Multiple Choice

In the food chain, which organism is at the top?

• Grass

• Grasshopper

• Mouse

• Owl

Multiple Choice

Fill in the blank: In the food chain, energy is passed from Grass to _______ to Mouse to Owl.

• A) Grasshopper

• B) Snake

• C) Rabbit

• D) Frog

Multiple Choice

Why is there more energy available to organisms at the bottom of a food chain compared to those at the top?

• A) Energy is created at the bottom

• B) Energy is lost at each level

• C) Energy is stored at the top

• D) Energy is not needed at the top.

Multiple Choice

Fill in the blank: Large predators are often at risk for extinction because there is less _______ available at the top of the food chain.

• Space

• Energy

• Water

• Shelter

Multiple Choice

Which of the following is NOT a general trophic level in an ecological pyramid of numbers?

• Producers

• Consumers

• Decomposers

• Predators

Multiple Choice

In an ecological pyramid of numbers, there are typically more organisms at lower levels than those at higher levels. Why is this the case?

• A) Energy loss at each level

• B) More predators

• C) Less food at higher levels

• D) More sunlight at lower levels

Multiple Choice

Fill in the blank: In the water cycle, water evaporates from the ______ and forms clouds.

• Ocean

• Mountains

• Forests

• Rivers

Multiple Choice

What process in the water cycle is responsible for returning water to the earth's surface?

• Evaporation

• Condensation

• Precipitation

• Transpiration

Multiple Choice

Which of the following best describes the role of producers in an ecological pyramid?

• A) They consume other organisms

• B) They produce energy through photosynthesis

• C) They decompose organic material

• D) They are at the top of the food chain.

Multiple Choice

Which of the following is a component of the Carbon/Oxygen Cycle?

• Nitrogen

• Oxygen

• Phosphorus

• Sulfur

Multiple Choice

In the Nitrogen Cycle, what is the role of decomposers?

• Convert nitrogen gas to ammonia

• Convert ammonia to nitrite

• Break down dead organic matter

• Fix nitrogen in plants.

Multiple Choice

The process of converting nitrogen gas (N2) into ammonia (NH3) is known as _______.

• Nitrification

• Nitrogen Fixation

• Denitrification

• Ammonification

Multiple Choice

In the Carbon/Oxygen Cycle, which organism is primarily responsible for the release of CO2?

• A) Plants

• B) Animals

• C) Decomposers

• D) Bacteria

Multiple Choice

Fill in the blank: In the Nitrogen Cycle, nitrite (NO2) is converted to nitrate (NO3) by the process of _______.

• Nitrification

• Denitrification

• Nitrogen Fixation

• Ammonification