Exploring Water and Energy Processes

What is the chemical formula for water?

• HCl

Which process describes the movement of molecules from an area of high concentration to an area of low concentration.

• Diffusion

• Photosynthesis

• Respiration

• Filtration

What is the main pigment involved in photosynthesis?

• Hemoglobin

• Chlorophyll

• Melanin

• Keratin

Which molecule is the primary energy carrier produced during cellular respiration?

• DNA

• ATP

• Glucose

• NADPH

What is the first stage of cellular respiration?

• Krebs cycle

• Glycolysis

• Electron transport chain

• Calvin cycle

Where does cellular respiration take place?

• Mitochondria

• Chloroplast

• Nucleus

• Cell Wall

Which factor would most likely increase the rate of diffusion?

• Decreasing temperature

• Increasing concentration gradient

• Decreasing surface area

• Increasing molecular size

Why does water have a high surface tension?

• Because of its low density

• Due to hydrogen bonding between water molecules

• Because it is a non-polar molecule

• Due to its high temperature

Which of the following best explains the role of NADPH in the light reactions of photosynthesis?

• It absorbs sunlight

• It carries electrons to the Calvin cycle

• It splits water molecules

• It produces ATP

During glycolysis, glucose is broken down into which molecule?

• Lactic acid

• Pyruvate

• Acetyl-CoA

• Ethanol