bio 1406 ch. 8 sapling

Photosynthesis reactants

- 6 CO2 - 6 H2O Energy source: - light

Photosynthesis products

- C6H12O6 - 6 O2 Energy source: light

heterotrophs

- obtain their food by consuming other organisms - rely on other organisms for energy - consumers - unable to produce organic compounds from inorganic materials

autotrophs

- producers - many use photosynthesis to produce organic compounds - use inorganic materials to produce energy - make their own food

Plants synthesize their own food in the form of sugars during the process of photosynthesis. Which of the following statements describe photosynthesis?

- produces sugars for the plant using only the energy from the sunlight - is a cellular process that occurs in the chloroplasts of plant cells - converts carbon dioxide sugars, releasing oxygen

Why do most plant leaves appear green?

-Chlorophyll pigments in plant cells reflect green wavelengths of light.

Which statements describe characteristics of stomata in plants?

-are pores enclosed by guard cells that are located on plant surfaces -permit carbon dioxide to enter and oxygen to escape from a plant

Which of the products of photosynthesis are used for cellular respiration?

carbohydrates & oxygen

A.) Label the components of a chloroplast. B.) Select the component of choloroplast that is the site of light-dependent reactions.

double membrane, thylakoid, granum, stroma thylakoids

substances in cellular respiration only:

mitochondria

substances in both photosynthesis and cellular respiration:

oxygen & electron transport chain

Some molecules that leave the chloroplasts at the end of photosynthesis will be used in cellular respiration. Which molecules are these?

sugars & oxygen

substances in photosynthesis only:

sunlight & chloroplasts