Transport - SCS

• Biology
• 12th Grade

TRANSPORT

The blood system

An average adult human contains roughly ... litres of blood

See Notes

010

An average adult human contains roughly 5 – 6 litres of blood (approximately 77 mls per kilogram)

b.socrative.com

https://b.socrative.com/teacher/#import-quiz/59042426

The socrative quiz is as a formative test, so students can see how much they already know. And also on which part they should focus today. This helps with differentiation. For example, as a teacher you can decide to give a student who already knew a lot about the human system but nothing about the plants system, to sent him to work with a separate assignment about plants. 

Why do we need a transport system?
And why has an Amoeba no need for a transport system?

Tip: An Amoeba is a unicellular organism

Transport system = the road of your body

The blood system is like a road network trough the entire body. All ‘roads’ are one way roads.
Transport of partials, like:

- Nutrients

- O2 and CO2

- Hormones

- Waste products

Which part of your blood is (mainly) fighting infections?

1. Plasma
2. Red Blood Cells
3. White blood cells
4. Platelets

relate the structure of the components of blood to their function

Blood has many different functions, including:

• transporting oxygen and nutrients to the lungs and tissues.
  
• transporting waste products to the kidneys and liver, which filter and clean the blood.
• forming blood clots to prevent excess blood loss.
  
• carrying cells and antibodies that fight infection.
• regulating body temperature.

Which part of your blood is involved in blood clotting?

1. Plasma
2. Red Blood Cells
3. White blood cells
4. Platelets

relate the structure of the components of blood to their function

Which part of your blood is responsible for transporting oxygen around the body?

Oxygen is bound to haemoglobin

1. Plasma
2. Red Blood Cells
3. White blood cells
4. Platelets

relate the structure of the components of blood to their function

What is the main component of Plasma?

Composition of Blood Plasma

Bloodvessels

• With O2 = Oxygenated blood
  
• Without O2 = Deoxygenated blood
• In rare case a mix of these two (half-half) eg, embryo

Arteries

Capillaries

Veins

thick walls

exchange materials

Tvalves

high pressure

narrow lumens

Mostly Deoxygenated blood

 Immunization

The principle in immunization is to introduce a harmless preparation of the antigens from an infectious agent into the body of a person, who becomes immune to the infectious agent as a result.

 Immunization

White blood cells 'remember' what to do in case of a real infection.

Checklist:

Are you able to:

4.1 explain the need for transport systems in multi-cellular organisms;

4.2 identify the materials which need to be transported in animals

4.3 describe the structure and function of the circulatory system in humans;

4.4 relate the structure of the components of blood to their function;

4.5 describe the role of blood in defending the body against disease;

4.6 explain how the principles of immunisation are used in the control of communicable diseases;

0

PLANT TRANSPORT

Options:

1. follow group instruction

2. self learning + test with BBC

www.bbc.co.uk

Self study + test

01:11

Why is the position of bundles different in the roots, stem and leaves?

02:14

Xylem in plants transport:

1. sugars
2. minerals
3. water
4. amino acids

Transport in plants

Xylem moves water and minerals from roots to the leaves (up).

Phloem moves food (Sucrose and amino acids) from the leaves to the rest of the plant (up and down). 

During transpiration water evaporates from the leaves and draws water from the roots. [EXPLAIN]

Explain how the structure of xylem and phloem vessels are suited for their function

See Notes

Name adaption in plants
to conserve water

Leaves reduced to spines: Reduces the surface area for transpiration

Reduced number of stomata: Reduces the transpiration rate

Waxy leaf cuticle: Impermeable to water, which stops evaporation

Rolled leaves, leaf hairs, and stomata sunk in pits: Traps moist air, which increases the humidity and reduces the diffusion of water vapour

Checklist:

Are you able to:

4.2 identify the materials which need to be transported in plants;

4.7 explain how the structure of xylem vessels is suited for their function;

4.8 discuss the role of the process of transpiration in plants;

4.9 describe the effect of external factors on transpiration;

4.10 discuss adaption in plants to conserve water;

4.11 explain how the structure of the phloem is suited to its function;

4.12 identify the products stored in plants and animals and the sites of storage;

4.13 discuss the importance of food storage in living organisms.

What did you think of today's lesson?
(don't forget to fill in te evaluation)

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What to do...?

1. self practice with Human transport Questions

2. self practice with Plant transport Questions

3. I need more help with these topics

4. challenge me more on these topics on a higher lvl

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