B12 Meta (3) - Respiration and food

Which one is NOT a similarity between glucose and octane?

• Many C-H bonds

• Good source of chemical potential energy

• Electrons have high energy

• Both have many oxygens

Electrons will have the highest energy when

• They are closest to the nucleus

• They are farthest from the nucleus

Water has a low chemical potential energy because

• The electrons are close to oxygen

• The electrons are far from oxygen

• The electrons are positioned equal distance from oxygen and hydrogen

Oxidation is the

• Reaction with oxygen

• Accepting of electrons

• Loss of electrons

• Stability in electron number

A combustion reaction is

• Exothermic

• Endothermic

• Energy neutral

Why is cellular respiration (CR) safer than combustion?

• CR releases energy over several steps

• CR releases less energy

• CR happens faster

• CR happens in a single step

What is the most common energy carrier in cells?

• NAD+

• FADH2

• ADP

• Protein

An enzyme that transfers high energy electrons is called a

• Electroase

• Dehydrogenase

• Phosphatase

• Respirase

What reaction brings energy into the biosphere?

• Combustion

• Dehydrogenation

• Cellular respiration

• Photosynthesis

A cell that can survive with or without oxygen is called a

• aerobic anaerobe
• facultative anaerobe
• obligate anaerobe
• anaerobic aerobe