Environmental Science quiz 3.1 and 3.2

Which of the following best defines a system?

• A network of independent components

• A network of interdependent components and processes

• A network of isolated components

• A network of linear processes

Which type of system exchanges energy but no matter with its surroundings?

• Open system

• Closed system

• Dynamic system

• Equilibrium system

Which type of feedback loop tends to increase a process or component?

• Positive feedback loop

• Negative feedback loop

• Steady-state feedback loop

• Homeostatic feedback loop

What is the term used to describe the variation around a stable average in an ecosystem?

• Static equilibrium

• Dynamic equilibrium

• Tipping point

• Emergent property

The concept of "emergent properties" refers to:

• Characteristics of a system that are less than the sum of its parts

• Characteristics of a system that are equal to the sum of its parts

• Characteristics of a system that are greater than the sum of its parts

• Characteristics of a system that are independent of its parts

Which of the following elements is not essential for life?

• Oxygen

• Nitrogen

• Calcium

• Carbon

Which type of bond is formed when atoms gain or lose electrons?

• Covalent bond

• Ionic bond

• Hydrogen bond

• Peptide bond

Which of the following is not one of the four major categories of organic compounds found in living organisms?

• Lipids

• Carbohydrates

• Proteins

• Nucleic acids

• Vitamins

Which of the following best describes a tipping point in an ecosystem?

• The point at which a system transitions to a new, stable state

• The point at which a system reaches maximum capacity

• The point at which a system becomes irreversibly damaged

• The point at which a system reaches a state of dynamic equilibrium

Water has unique properties due to

• polarity

• ionic bond

• covalent bond

• oxygen atom