Some students used vinegar to dissolve away the shells of three eggs and used the eggs as models of human red blood cells. The students observed the changes in the eggs when they were placed in different solutions. (View Image)

Which statement best describes the role of the cell membrane in this model?

• The cell membrane is an impermeable barrier that prevents water from entering the cell.

• The cell membrane allows solutes to enter the cell, which causes the cell to shrink.

• The cell membrane allows water to enter and leave the cell.

• The cell membrane removes solutes from the environment.

A cladogram of five species is shown. Based on the diagram, the ancestral species most likely had -

• a vertebral column

• a vertebral column and hair

• sharp teeth and retractable claws

• the ability to purr

What is the pigment in chloroplasts that performs photosynthesis?

• Chlorosynthesis
• Chlorophyll
• ADP
• Electron Transport

Which of the following equations represents the overall chemical reaction for photosynthesis?

• 6O₂+ 6H₂O → C₆H₁₂O₆+ 6O₂

• C₆H₁₂O₆ + 6H₂O→ 6O₂+ 6O₂

• 6CO₂+ 6H₂O→ C₆H₁₂O₆+ 6O₂

• 6O₂ + 6H₂O→ C₆H₁₂O₆ + 6CO₂

The rate of photosynthesis can be influenced by...

• Temperature

• Carbon dioxide levels

• Light intensity

• Oxygen concentration

Glucose is a ...

• sugar
• carbohydrate
• source of quick energy
• all are correct

Choose the statement that best describes light reaction.

• It converts CO2 to sugar molecule

• It converts light energy to chemical energy of ATP and NADPH

• It takes place in the stroma

Autotrophs (producers) can perform photosynthesis because they have -

• Mitochondria

• Ribosomes

• A Nucleus

• Chloroplasts

Leaves look green because.....

• they eat their vegetables
• to blend into their environment
• they contain a molecule named chlorophyll
• they are sick

What are the products of photosynthesis?

• water and carbon dioxide
• oxygen and glucose
• oxygen and carbon dioxide
• oxygen and water