Photosyntesis/Respiration- Active & Passive Transport

What does the term concentration gradient mean?

• The movement of water only

• A difference in concentration between two areas

• When concentration is the same everywhere

• The process of mixing substances

Before you mix sugar into the water, where would you expect most of the sugar particles to be?

• Spread evenly in the water

• Floating above water

• Clumped together in one area

• Moving in and out of the water

What happens to the sugar particles after mixing in water?

• They disappear completely

• They move only to one side of the container

• They stay clumped in one spot

• They spread out evenly through the water

Tags

NGSS.HS-PS3-2

What is active transport?

• Movement of particles without using energy

• Movement of particles from low to high concentration using energy (ATP)

• The spreading out of particles until equilibrium

• Movement of only water molecules

Which molecule provides the energy for active transport?

• Glucose

• DNA

• ATP

• Water

Why do some substances need energy to move across a membrane?

• Because they move from high to low concentration

• Because they are small and move easily

• Because they cannot move on their own through simple diffusion

• Because they are made of water

Cells use __________ to move materials that cannot cross the cell membrane on their own.

• Water

• Energy

• Oxygen

• Carbon Dioxide

Which of the following is required for active transport to move molecules against their concentration gradient?

• Energy from ATP

• High concentration of water

• Simple diffusion

• Random movement of molecules

Where does cellular respiration occur in the cell?

• Nucleus

• Ribosomes

• Mitochondria

• Cell Membrane

Tags

NGSS.HS-LS1-7

During cellular respiration, chemical energy from food is converted into:

• Heat energy

• Light energy

• ATP energy

• Kinetic energy

Tags

NGSS.HS-LS1-7