Plant Nutrition, Part II (Leaf Structure)

DOWNLOAD THE FIRST SET OF SLIDES FOR PLANT NUTRITION HERE

YOU NEED TO KNOW HOW TO:

1. Draw a cross-section of a leaf and label the parts (palisade mesophyll, spongy mesophyll, vascular bundle, etc.) accordingly.
   
2. State the roles each part in the cross-section plays in photosynthesis and gaseous exchange.
   
3. Explain how guard cells and stomata work.
   
4. List up to FOUR ways the leaf is efficiently suited for photosynthesis.
   
5. Name TWO minerals (nitrates, magnesium) that the plant needs and state the effects of their deficiency.
   

LINKS

1. CLICK HERE TO SEE VIDEO EXPLAINING LEAF STRUCTURE

2. STRUCTURE AND ROLE OF STOMATA

Plant Nutrition, Part I (Photosynthesis)

DOWNLOAD THE FIRST SET OF SLIDES FOR PLANT NUTRITION HERE!

YOU NEED TO KNOW HOW TO:

1. Define photosynthesis!
2. State the chemical and word equations for photosynthesis (DON'T FORGET that the new equation is: 6CO2 + 12H2O ---> C6H12O6 + 6O2 + 6H2O - or - Carbon Dioxide + Water ---> Glucose + Oxygen + Water)
   
3. Explain that photosynthesis has a light-dependent (light) and light-independent (dark) stage and explain them both in detail.
4. State the factors that AFFECT rates of photosynthesis and HOW.
5. Be able to explain how to destarch a leaf and how to test for starch.
6. Be able how to design experiments that show how the following are essential for photosynthesis: CHLOROPHYLL, LIGHT, CARBON DIOXIDE.

LINKS

HOW TO TEST FOR STARCH - ANIMATION (CLICK TO VISIT)

PHOTOSYNTHESIS TESTS FOR CARBON DIOXIDE, CHLOROPHYLL AND LIGHT (important!)

VIDEOS

1. PHOTOSYNTHESIS (BRITANNICA)


2. PHOTOSYNTHESIS: LEAF STRUCTURE


3. BASIC UNDERSTANDING OF PHOTOSYNTHESIS (CARTOON)


NEXT CLASS:
PART II

• LEAF STRUCTURE.
• LEAF'S ADAPTABILITY FOR PHOTOSYNTHESIS.
• ROLE OF MINERALS IN PLANTS.

Enzymes

DOWNLOAD THE SLIDES FOR ENZYMES HERE!

YOU REALLY NEED TO KNOW HOW TO:

1. Define what an ENZYME is and state why they are ESSENTIAL to us.
   
2. State what the words 'substrate', 'product' and 'active site' mean.
3. State the CHARACTERISTICS of an enzyme!
4. Explain what DENATURATION means.
   
5. Explain the FACTORS that affect enzyme activity. Please be able to draw graphs to go along with your explanations.
6. State what temperature most enzymes work at optimum efficiency (40 Celcius) and at what temperature do most enzymes get denatured (70 Celcius).
7. Explain the LOCK AND KEY HYPOTHESIS!
8. Explain the two ways the hypothesis works ('lysis' and 'synthesis').
9. Use the lock and key hypothesis to explain why enzymes are HIGHLY SPECIFIC.
   

VIDEOS and LINKS:


1. ANIMATION: HOW ENZYMES WORK (CLICK TO VISIT)


2. WHAT ARE ENZYMES?


3. THE LOCK AND KEY HYPOTHESIS


4. ADDITIONAL MATERIAL ABOUT ENZYMES (FOR THOSE WHO ARE INTRIGUED)

Cells + Diffusion and Osmosis

DOWNLOAD "DIFFUSION AND OSMOSIS" SLIDES HERE:

YOU REALLY NEED TO KNOW HOW TO:

(CELLS)

1. Explain what the words "cell", "organelle", "tissue" and "system" mean.
2. Draw an animal cell and plant cell and label their organelles accordingly!
3. State the function of each organelle (nucleus, mitochondrion, chloroplast, cell membrane, cellulose cell wall, cytoplasm, vacuoles, starch and glycogen granules)
4. State the differences between plant and animal cells.
5. Explain what "specialization" of cells means.
6. Give examples of specialization and explain them properly (e.g. root hair, xylem, red blood cell).

(DIFFUSION AND OSMOSIS)

1. Define diffusion and osmosis, and give examples of both!
2. Know what the terms "semi-permeable" and "equilibrium" mean.
3. State differences between diffusion and osmosis.
4. Give definitions of PLASMOLYSIS and TURGIDITY and state how either of them affect plants.
5. Give definitions of hypertonic, hypotonic and isotonic! (plus examples!)

VIDEOS:

1. ANIMATION: HOW DIFFUSION WORKS (CLICK TO SEE!)

2. ANIMATION: HOW OSMOSIS WORKS (CLICK TO SEE!)

3. VIDEO OF OSMOSIS


4. DISPLAY OF PLASMOLYSIS IN ONION CELLS


5. ISOTONIC, HYPERTONIC AND HYPOTONIC SOLUTIONS

Welcome, Form 5 Upper Level Biology Students!

This blog would be used for posting download links to the Powerpoints presented in class. I will also try to upload the soft copies of the handouts here also. If possible, I might try to upload both handouts and presentations before the actual classes, so those of you who are interested can skim them and get an idea of the material beforehand.

Once in a while, I may update this blog with Youtube videos and links I find useful, fun or comprehensive.

PLEASE NOTE that some of the information in the videos may be beyond what you need to know. Check your textbook and syllabus to find out what you need to know. While the slides and videos here will definitely help make the work easier and more comprehensive, don't forget to check out your textbook for any extra details. Everything is in there in detail. Paying attention in class should also help greatly ;)

NEW MATERIAL will be uploaded as time goes along, so bookmark this page and check it the day after each class session. Hope the information will be useful to you all. Be good and study hard!

- MR. K. HOSEIN