Biology 2E: Metabolism Chapter 6 Review Quiz

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Questions and Answers

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?

<p>Endergonic reaction (B)</p> Signup and view all the answers

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

<p>Activation energy (A)</p> Signup and view all the answers

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

<p>ATP (A)</p> Signup and view all the answers

When does CO2 fixation occur in CAM photosynthesis?

<p>At night (D)</p> Signup and view all the answers

In CAM photosynthesis, where does the Calvin cycle occur?

<p>During the day (A)</p> Signup and view all the answers

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

<p>Direct contact (B)</p> Signup and view all the answers

What is the characteristic of paracrine signaling in animals?

<p>Involving secreted messenger molecules (D)</p> Signup and view all the answers

In autocrine signaling, where does the ligand bind?

<p>Receptors on the signaling cell (A)</p> Signup and view all the answers

What is a key difference between C4 and CAM photosynthesis?

<p>The time of CO2 fixation (C)</p> Signup and view all the answers

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

<p>Capturing solar energy and converting it into chemical energy (C)</p> Signup and view all the answers

Which statement accurately describes chemoautotrophs?

<p>They rely on inorganic compounds to make food (C)</p> Signup and view all the answers

How do heterotrophs obtain organic material for sustenance?

<p>By consuming other living organisms (A)</p> Signup and view all the answers

Where does photosynthesis primarily occur in plant cells?

<p>Leaves (A)</p> Signup and view all the answers

What role do decomposers play in the ecosystem?

<p>Consume dead organic material or feces (C)</p> Signup and view all the answers

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

<p>Because heterotrophs cannot produce their own food from inorganic sources (A)</p> Signup and view all the answers

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