Biology Midterm Review

Front

Back

The reactants are 2HO and Na.

Front

What does a food chain model illustrate about feeding relationships?

Back

Matter cycles and energy flows through pond organisms from primary producers to a series of consumers.

Front

What is the term for the molecule that an enzyme acts upon?

Back

Substrate.

Front

What should John look for to identify primary producers in the ocean food web?

Back

Look for tiny phytoplankton that float on the ocean surface.

Front

Which statement is NOT true about active transport?

Back

It moves substances from high to low concentration.

Front

Define active transport in biological systems.

Back

Active transport is the movement of substances against their concentration gradient, requiring energy.

Front

What is the role of primary producers in an ecosystem?

Back

Primary producers convert solar energy into chemical energy through photosynthesis.

Front

Explain the difference between a food chain and a food web.

Back

A food chain shows a linear sequence of energy flow, while a food web illustrates the interconnected feeding relationships among various organisms.

Front

What is the significance of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, recycling nutrients back into the ecosystem.

Front

What is the function of enzymes in biological reactions?

Back

Enzymes act as catalysts, speeding up chemical reactions without being consumed in the process.