BMOL6401 - L4 - Microbial Nutrient Requirements

Which of these is NOT an essential element for cells?

• Sodium
• Oxygen
• Selenium
• Nitrogen
• Hydrogen

How many elements are essential for all microorganisms?

• 5
• 6
• 7
• 9

Is selenium an essential element?

• Yes
• No
• Sometimes
• Only for animals

Define macronutrients

• Nutrients required in trace amounts
• Nutrients required in large amounts
• Nutrients required for energy production
• Nutrients required for cell signaling

Define micronutrients

• Nutrients required in trace amounts
• Nutrients required in large amounts
• Nutrients required for energy production
• Nutrients required for cell signaling

A typical bacterium is made up of how much carbon?

• 0.3
• 0.5
• 0.6
• 0.8

Define catabolism

• Breaking down substances, releasing energy
• Making new substances, consuming energy
• Creating ATP from ADP and phosphate
• Storing energy for future use

Define anabolism

• Breaking down substances
• Consuming energy to create new substances
• Creating ATP from ADP and phosphate
• Breaking bonds to release energy

What purpose does nutrition serve?

• Provides vitamins only
• Supplies energy, nutrients, and electrons
• Drives biosynthesis and provides energy
• Provides only nutrients

How can you obtain carbon?

• Inorganically from CO2
• Organically from proteins
• Inorganically from metals
• Organically from sugars