PHOTOSYNTHESIS

Unit Target: Determine how the structures of organisms allow them to obtain the energy they need to survive.

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

Match each type of energy with a description.

Chemical used in photosynthesis

Heat for communication

Mechanical motion

Light an example is glucose

Electrical proper temperatures are required for chemical reactions

Sound nerve impulses, muscle contractions

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)

1

2

3

4

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)What organ is

absorbing water?

A- roots

What organ is absorbing sunlight?

E- leaf

What organ 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

Learning Target: Compare and contrast cellular respiration and photosynthesis.

(reasoning)Which process is it?

Produces glucose

Requires oxygen

Creates 34-38 ATP

Occurs in plants and animals

Photosynthesis

Aerobic cellular respiration

Cellular respiration

Cellular respiration

Summary

True or False?Most organisms depend on the sun as a source of energy.

True

Autotrophs are the only organisms that can convert the sun’s energy to usable chemical energy in a process called photosynthesis.

True

Both autotrophs and heterotrophs release the energy stored in foods such as glucose in a process called cellular respiration.

True