Thursday, January 4

Agenda:1. Bell Work2. Photosynthesis/

Chloroplast Notes (pg. 5)

3. Starch Production Lab (pg. 9-12)

4. Complete Starch Production Lab Questions

The energy locked in the macromolecule below was formedby what reaction

_________.

Unit 8 Quiz this FRIDAY

Class Rules

• Respect others.• Keep the room clean.• Be polite and helpful.

• No offensive language.• Keep hands, feet and objects to

yourself.

Class Syllabus

• Grading• Absence• Make-up work• Lab Safety• Read and Sign with your parents tonight • Return Tomorrow

Class Website

• Can get missed or lost work.• See upcoming schedules.

• Get PPTs from class.• www.lhfc.weebly.com

1st period google classroom: 9sdbmb

4th period google classroom: 99td3j

5th period google classroom: lb3s8is

6th period google classroom: sv40b

7th period google classroom: 4xqi1pl

Photosynthesis Song

https://www.youtube.com/watch?v=xuivYRmIACM

Welcome back to Biology!

Turn to page 5 of your packets.

REVIEW: Which type of biomolecule is

STARCH? A. CarbohydratesB. LipidsC. Nucleic AcidsD. Proteins

Where does this process occur?

LeafMesophyll Plant CellChloroplast

→ LEAF→ MESOPHYLL

→ PLANT CELL→ CHLOROPLAST

Where does the process occur?

Observing Stomata• Fill in the chart in your Notebook

Cactus – lives in a hot, dry environment

Stomata’s are openings in the leaf that allows gases to flow in and out of the cell.

These gases are:CO2O2H20

Oak tree – lives in a temperate environment

Hibiscus – lives in a rainforest

How do CO2 and H2O get converted into sugar?• Chemical reactions occur inside plant cells!

• Where?• In the chloroplasts.

CHLOROPLAST

Chloroplasts are specialized organelles to carry out photosynthesis!

Chloroplasts contain CHLOROPHYLL (absorbs light)

▫ Light Energy is absorbed and converted into chemical energy

Description of photosynthesis

This is a “Light- Dependent Reaction”

Chemical Equations of photosynthesis.

Reactants ProductsWhat goes in What is made

CO2 +H2O+energy O2 +C6H12O6

We said plants need energy from the sun. How does it get the energy?

Light energy is absorbed by chlorophyllin the thylakoid of the chloroplast.

DESCRIPTION OF THE PROCESS

The light energy absorbed will split H20 into hydrogenand oxygen during the light-dependent reactions.

H2O

oxygen

Light reactions

NADPHATP

DESCRIPTION OF THE PROCESS

The Calvin Cycle (Light Independent Reaction), ATP is converted into Glucose.

H2O

oxygen

Light reactions

NADPHATP

DESCRIPTION OF THE PROCESS

Calvin Cycle Glucose

EQUATION

• How many molecules of carbon dioxide does it take to make one molecule of glucose?▫ 6

• Where is the energy stored?▫ Chemical bonds of glucose

• What are the products of photosynthesis?▫ Glucose (C6H12O6) and Oxygen (O2)

• Where does the oxygen come from?▫ Water (Tricky ☺)

• Review: What absorbs light in a chloroplast, so that Glucose can be made?

glucose

Revisiting Stomata Questions

• Which leaf had the most stomata? Why do you think this was so?

• What gases move in and out of the leaf stomata?

• What does the number of stomata indicate about the rate of photosynthesis for a plant?