16704548
Description
Flashcards by Sabaa Khan, updated more than 1 year ago
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Created by Sabaa Khan
about 5 years ago
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| Question | Answer |
| Module 2.3: Specialised Cells | By Sabaa Khan |
| What are multicelluar organisms? | Living things made of many cells and they work together but do not all do the same thing |
| How many cells are there in the human body and how many types are there? | There are about 50 trillion cells and 200 different types |
| What are types of muscles in the human body? | Voluntary muscles (skeletal muscles), involuntary muscles (smooth muscles), and cardic muscles. |
| What does your diaphram control? | Your breathing and is an involuntary muscle. |
| What type of muscle is this? | Involuntary muscle (smooth muscle) |
| What contains a large number of mitochondria and why does it need it? | All voluntary and involuntary muscles, this keeps the muscles working because of the energy provided. |
| Why doesn't cardic muscles ever get tired? | It has a very large number of mitochondria to provide a continuous supply of energy. |
| Nerve cells make up your _________. | Brain. |
| Define axons. | Axons: Long fibres that extend from nerve cells and carry messages over long distances. |
| Define Red Blood Cells | Cells the carry oxygen from the lung around the body. |
| Define White Blood Cells | Part of the immune system and helps to fight infections. |
| How many types of fat cells are there in your body? | |
| What is the function of Root hairs? | Root hairs increase the surface area of the root for water uptake. |
| What is the definition of guard cell? | Guard cells: cells that work in pairs to open to close the stomata. |
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