Photosynthesis and Cellular Respiration Concepts

Dr. Ogden provides an overview of key biology themes, focusing on metabolism, enzymes, membrane transport, photosynthesis, and cellular respiration. The lecture explains how enzymes lower activation energy, the differences between passive and active transport, and the interconnectedness of photosynthesis and cellular respiration in energy cycles.

What is the primary role of enzymes in biological reactions?

• To increase the activation energy

• To lower the activation energy

• To act as reactants

• To convert products back to reactants

Which type of membrane transport does not require energy?

• Endocytosis

• Osmosis

• Facilitated diffusion

• Active transport

In facilitated diffusion, how do molecules move across the membrane?

• Through lipid bilayer

• By endocytosis

• Using ATP

• Via membrane proteins

What is the main product of photosynthesis?

• ATP

• Carbon dioxide

• Glucose

• Oxygen

Which process in cellular respiration occurs outside the mitochondria?

• Citric acid cycle

• Electron transport chain

• Oxidative phosphorylation

• Glycolysis

What is the final electron acceptor in the electron transport chain?

• FADH2

• NADH

• Oxygen

• Carbon dioxide

How many ATP molecules are produced in total during cellular respiration?

• 38

• 34

• 18

• 2

What are the main ingredients for photosynthesis?

• Light and chlorophyll

• ATP and NADPH

• Carbon dioxide and water

• Glucose and oxygen

Where does the oxygen released during photosynthesis come from?

• Carbon dioxide

• Water

• Glucose

• Chlorophyll

What is the relationship between photosynthesis and cellular respiration?

• Both processes occur in the mitochondria

• Respiration produces glucose used in photosynthesis

• Photosynthesis produces oxygen used in respiration

• They are unrelated processes