PHOTOSYNTHESIS

Unit Target: Use a model to illustrate how photosynthesis transforms light energy into stored chemical energy.

Learning Target: Model ATP production and use. (skill)

Energya. Comes from the sunb. Is used by plants to growc. Is used by animals for daily activitiesd. Is the ability to do worke. All of the above

Answer: e

Truth and Baloney

The original source of energy for most living things is water.

Baloney: Sun

Organisms that can make their own food from the sun’s energy are called heterotrophs.

Baloney: Autotrophs

ATP

Which is not a component of ATP?

a. Adenine

b. Glucose

c. Ribose

d. Phosphates

b. Glucose

Which component of ATP is missing from ADP?

a. A- Adenine

b. B- Ribose

c. C- 2 phosphates

d. D- 1 phosphate

D- 1 phosphate

Energy is released from ATP when bonds break between

a. adenineb. ribosec. phosphate groups

c

ATP is

a. Light energy

b. Mechanical energy

c. Chemical energy

d. Heat energy

c.

Which is not true about ATP

a. It stores energy

b. It releases energy

c. It is used for active transport of substances into and out of the cell

d. It is used for diffusion and osmosis

d. Diffusion and osmosis do not require energy.

Learning Target: Interpret a diagram of what occurs in a leaf during photosynthesis. (skill)

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5

Where do the light dependant reactions take place?

The thylakoid

Where do the light independent reactions take place?

The stroma

Photosynthesis takes places in a plant cells mitochondria.

Baloney: chloroplast

A plant needs carbon dioxide, water and sunlight to carry out photosynthesis.

Truth

Autotrophs can convert the sunlight into mechanical energy.

Baloney: chemical

The chemical energy made by autotrophs are carbohydrates such as sugar and starch.

True

Learning Target: Write the chemical formula for photosynthesis. (knowledge)

Name the missing parts of the formula from left to right.

light6CO2 + 6H2O -------- 6O2 + C6H12O6

Heterotrophs rely on photosynthesis for the food and oxygen produced.

True

Learning Target: Observe changes in a system during photosynthesis. (R)

How will photosynthesis be affected if you do not give a plant light?

Photosynthesis cannot take place without light.

What will happen to the rate of photosynthesis if you increase the amount of carbon dioxide available?

It will increase.

Learning Target: Determine the structures of a plant that helps it obtain energy. (knowledge)Which part of the plant

is absorbing water?

A- roots

What plant part is absorbing sunlight?

E- leaf

What plant part of the plant takes in carbon dioxide?

Leaf

What type of cell is show in the picture?

Guard cell

On a hot day, guard cells (open / close ) the stoma to keep too much water from leaving the plant.

What gases important to photosynthesis pass through the stoma?

Carbon dioxide and oxygen

The organelle of the leaf that is the site of photosynthesis is the nucleus.

False: chloroplast

The pigment in the chloroplast that absorbs sunlight is called xanthophyll.

False: chlorophyll

During the winter, chlorophyll begins to disappear from the leaf as photosynthesis production shuts down.

True