Chemistry of Life Part 1

While maintaining homeostasis, a(n) ________ monitors the internal or external environment to detect changes.

• sensor
• controller
• regulator
• variable

Bond found in a water molecule

• Non-polar covalent bond

• Ionic bond
• Polar covalent bond

• Hydrogen bond
• Van der Waals bond

In a _____ feedback system, a change in a condition is detected and amplified.

• reverse
• neutral
• negative
• positive

The blood clotting system is an example of _______ feedback. 

• positive
• enhanced
• neutral
• negative

Which of the following is CORRECT?

• Proton = Positive 

  Neutron = Negative

• Proton = Neutral

  Neutron = Negative

• Electron = Negative

  Neutron = Neutral

• Neutron = Neutral

  Electron = Positive

How many Protons does Lithium have?

• 3
• 6
• 5
• 4

How many Neutrons does Lithium have?

• 4
• 10
• 8
• 6

Hyperventilation causes the blood pH to rise above its homeostatic range. What diagnostic term or phrase would you use for this?

• Respiratory alkalosis
• Metabolic alkalosis

• Respiratory acidosis
• Metabolic acidosis

Na+ is an ion. Is it an Anion or Cation?

• Neutral
• Cation
• Anion
• Proton

Name this bond

• Hydrogen bond
• Van der Waals bond
• Polar covalent bond

• Non-polar covalent bond

• Ionic bond