Biology 2E: Metabolism Chapter 6 Review Quiz

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What is the totality of an organism's chemical reactions known as?

Exergonic reaction

Potential energy

Kinetic energy

Metabolism (correct)

Which type of pathway breaks down complex molecules into simpler compounds?

Catabolic pathway (correct)

Anabolic pathway

Activation energy

Endergonic reaction

What is defined as the capacity to cause change or do work?

Exergonic reaction

Energy (correct)

Potential energy

ATP

Which type of reaction requires an input of energy and does not occur spontaneously?

Endergonic reaction Signup and view all the answers

What is the energy required for a reaction to occur known as?

Activation energy Signup and view all the answers

Which molecule is considered the cell's energy source and has high-energy bonds between phosphate groups?

ATP Signup and view all the answers

When does CO2 fixation occur in CAM photosynthesis?

At night Signup and view all the answers

In CAM photosynthesis, where does the Calvin cycle occur?

During the day Signup and view all the answers

Which method of local signaling involves cell junctions directly connecting adjacent cells?

Direct contact Signup and view all the answers

What is the characteristic of paracrine signaling in animals?

Involving secreted messenger molecules Signup and view all the answers

In autocrine signaling, where does the ligand bind?

Receptors on the signaling cell Signup and view all the answers

What is a key difference between C4 and CAM photosynthesis?

The time of CO2 fixation Signup and view all the answers

What is the primary function of chloroplasts in the process of photosynthesis?

Capturing solar energy and converting it into chemical energy Signup and view all the answers

Which statement accurately describes chemoautotrophs?

They rely on inorganic compounds to make food Signup and view all the answers

How do heterotrophs obtain organic material for sustenance?

By consuming other living organisms Signup and view all the answers

Where does photosynthesis primarily occur in plant cells?

Leaves Signup and view all the answers

What role do decomposers play in the ecosystem?

Consume dead organic material or feces Signup and view all the answers

Why do almost all heterotrophs, including humans, depend on photoautotrophs for food?

Because heterotrophs cannot produce their own food from inorganic sources Signup and view all the answers