Chemical Reactions and Biological Systems Quiz
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Questions and Answers

Which type of reaction absorbs heat from the surroundings?

  • Endothermic (correct)
  • Isothermal
  • Exothermic
  • Isobaric

What is the primary function of the endocrine system in the body?

  • Maintaining homeostasis through nerve impulses
  • Rapid communication through electrical signals
  • Secreting hormones to regulate bodily functions (correct)
  • Directing voluntary movements

In the context of homeostasis, which of the following best describes a negative feedback loop?

  • A feedback loop that maintains stability by opposing a change in a variable (correct)
  • A feedback loop that initiates the change in a variable
  • A feedback loop that has no effect on the variable
  • A feedback loop that amplifies a change in a variable

What is the main component responsible for the greenhouse effect?

<p>Methane (CH4) (A)</p> Signup and view all the answers

How does skin assist in maintaining constant body temperature?

<p>By releasing sweat to cool the body through evaporation (A)</p> Signup and view all the answers

Which environmental factor contributes significantly to the enhanced greenhouse effect?

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

Balance chemical equations. Draw stick diagrams for water, oxygen, carbon dioxide, ______, nitrogen, ammonia, methane.

<p>hydrogen</p> Signup and view all the answers

Define ______ and give examples of conditions in the body which must be held constant.

<p>homeostasis</p> Signup and view all the answers

Compare and contrast the ______ and endocrine systems.

<p>nervous</p> Signup and view all the answers

Explain (with examples) the role of ______ loops in maintaining homeostasis.

<p>negative feedback</p> Signup and view all the answers

Sketch the structure of skin, explaining how it helps to maintain constant body ______.

<p>temperature</p> Signup and view all the answers

Outline the process of the GH (greenhouse) effect. Identify & explain factors that lead to the enhanced GH effect and climate change (ie: albedo, GH gases --- incl.CO2 , methane and H2O water vapor). Identify & evaluate suggested solutions to the enhanced GH effect/ climate ______.

<p>change</p> Signup and view all the answers

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