Cecilia Adem

We are sharing these resources to help us understand more about flowers and their importance

Flower structure:
www.saps.org.uk/secondary/teaching-resources/547-the-structure-of-flowers
www.britannica.com/EBchecked/topic/357598/dicotyledon
Video clip – germination:
www.bbc.co.uk/learningzone/clips/an-introduction-to-seed-germination-and-growth/63.html

Lymph and lymphatic vessels

https://www.livescience.com/26983-lymphatic-system.html

How do we do this?

Reading an ECG

https://images.app.goo.gl/KZyucHnNBaLAZJHC8

Activity 9.1
Dissecting a heart

Skills
AO3.1 Using techniques, apparatus and materials
AO3.3 Observing, measuring and recording

You are going to investigate the structure of a heart.
Hearts are no diff erent from any other meat, so there is no need to be concerned about
touching it. However, it is sensible to wash your hands carefully aft er touching it, and to
avoid getting blood on your clothes. Wear an old shirt or lab coat if you can.

1 Place the heart on the board in front of you, and compare it with the diagram in
Figure 9.5 in your Coursebook. Identify as many parts as possible. Make a large,
labelled drawing of the heart.
2 Using scissors, cut the heart open along a line approximately like the one shown on
this diagram

Place the two halves on the board in front of you, cut side uppermost. Compare what
you can see with the diagram in Figure 9.4 in your Coursebook. Identify as many
parts as possible.
Make a large, labelled drawing of one of the halves of the heart.

3 If you can fi nd the valves between the atria and ventricles, try pushing your fi ngers
into them. Can you work out how they close when the ventricle contracts and pushes
blood up against them? You may also be able to fi nd the semilunar valves inside the
aorta or the pulmonary artery.
4 Find the tendons that hold the valves in position. Th ink about how they help the
valves to work properly

https://www.mediafire.com/file/r5wp4ka7yvfer39/0610_m15_ms_22.pdf/file

https://www.mediafire.com/file/n4adbal729sjch7/0610_s15_ms_22.pdf/file

https://www.mediafire.com/file/vbp559tvaq64ndb/0610_s15_ms_21.pdf/file

https://www.mediafire.com/file/ryxiihddmltp0um/0610_s15_qp_22.pdf/file

https://www.mediafire.com/file/co45vi5gbeha96h/0610_s15_qp_21.pdf/file

https://www.mediafire.com/file/gqipbhlpsmejw8m/0610_m15_qp_22.pdf/file

https://www.mediafire.com/file/q2ox205yet5ml2a/0610_s15_qp_23.pdf/file

As I had already told you in class, the contents you need to revise for this coming term test are the ones you find in Chapter2.

Cell structure. Microscopes.Cell membrane. Cell wall. Cytoplasm. Vacuoles. Chloroplasts. Nucleus. Comparison between animal and plant cells. Mitochondria. Ribosomes. Looking at animal and plant cells. Cells and organisms. Tissues. Organs. Organ systems. Organisms. Specialised cells.

Dear S2, these are the contents you will be tested on:

1. Animal nutrition ( Chapter 7 )

• Digestion. Mechanical and chemical digestion. Key definitions.
• Teeth. Types of teeth.
• The alimentary canal. The mouth. The oesophagus. The stomach. The small intestine. Bile. Villi. Absorption of digested food. The large intestine,
• Assimilation.
• Key definitions of ingestion, absorption, egestion, assimilation

2. Transport in animals  ( Chapter 9 )

• Circulatory systems. Oxygenating the blood. Double and single circulatory systems
• The heart. Coronary arteries supply heart muscle. Preventing CHD. Treating CHD
• Heart beat
• Valves in the heart.
• Blood vessels. Arteries, veins, capillaries. Naming blood vessels. Main arteries and veins in the human body.

3. Lab Practical Work

• Effect of catalase on H2O2      Act 5.1, p. 52 and blog
• Testing for Vitamin C
• Detecting plaque
• Detecting how amylase breaks down  starch with iodine solution