Chloroplast Chloroplasts are the food producers of the cell. This organelle is only found eukaryotic cells. They are only found in plant cells. Chloroplasts contain small pigments called chlorophylls. Animal cells do not have chloroplasts. All green plants you see are working to convert the energy of the sun into sugars. Plants are the basis of all life on Earth. They create sugars‚ and the oxygen that we breathe. This process is also known as chloroplast. The mitochondria work in the opposite
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PROTIST STUDY GUIDE 1. Where can Protists primarily be found? Most Protists can be found in wet areas‚ tree trunks and other organisms 2. What niche do Protists fill in an ecosystem? Protists have a big role in marine life‚ it serves as housing for many animals and food for many as well. 3. What are the 3 categories of Protists? Animal-like protists plant-like protists and fungus-like protists 4. What are the 4 types of Protozoa and how does each one move? Ciliates : Have hundreds of
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1. Cells structure and Organisation 1.1 Plant Cells and Animal Cells: Fig.1.0 Basic structures of an animal cell and a plant cell. 1. • • • Cell wall: Porous. Permeable. Non-living structure made of cellulose. 2. Cell membrane/Plasma membrane • Semi-permeable/Partially permeable(Only certain parts can pass through it and some aren’t able). 3. • • • Cytoplasm Contains cell organelles. Food substances. Mostly H2O. 4. Vacuole/Sap vacuole/Large central vacuole • Mostly H2O. 5. Nucleus •
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MITOSIS What is Mitosis? There are various structures within the cell‚ but many are too difficult to see. For example‚ within the nucleus lie the chromosomes. These are important for heredity and reproduction. When a cell splits and becomes two‚ certain processes occur within the nucleus first. One of these processes involves the splitting of the chromosomes. This process is called Mitosis and there are four distinct stages. Mitosis takes place in Regular Body Cells or Somatic Cell. It keeps
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Hello everyone! I hope you had a wonderful weekend. We are going to start class today talking about cells. Believe it or not‚ each and every one of you came in contact with cells over the weekend. The most important thing to remember is this: cells make up living things. They make up us‚ our families‚ our dogs‚ and even the trees that provide shade to your front yard. Today we are going to focus on the cells that make up our bodies. Your skin‚ brain‚ muscles‚ bones‚ and every other part of your body
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1. Introduction Welcome to GCSE Biology. This year we will be studying OCR 21st Century science. This is a modular course of 7 units and a piece of coursework. 2. Your Lecturers In the box below write the name of your lecturer‚ the times of your lessons and which rooms they are in. You should also write your lecturers staff room and how to contact them (their office phone number and college e-mail addresses). Lecturer Times & Rooms Contact details 3. Structure of the course
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Nucleolus Nucleolus is present inside the nucleus. The job of nucleolus is to store the information‚ the information stored in the nucleolus is used in the process of making ribosomes. The ribosomes are used to make proteins. Nucleus: The nucleus is the place from where all the activities happening in the cell are controlled. All the cell’s information is stored in the nucleus in the form of DNA and chromosomes. Nucleus is the main centre of the cell and that’s why it is also called as town hall
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All Biomolecules have certain functions and these molecules all have a unique structure which is why they function in these ways. These molecules are known collectively as macromolecules‚ these molecules are grouped into four main categories which each have there own structure. These structures are the key to the macromolecules functions as each of them do a specific task in the body. Macromolecules are grouped into carbohydrates‚ nucleic acids‚ proteins‚ and lipids. In most cases macromolecules
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Intro AN Molecule AD What happens during cytokinesis? CA Molecular level AD Animal and plant cell difference CA History RE Uses RE Conclusion Bibliography INTRO: Cytokinesis is the last process in the eukaryotic cell division and is the process that divides one cell into two daughter cells. Occurs in the end of mitosis after telophase. It signals the start of a new cellular generation. The cytoplasm needs to be separate to create the to new cells. Different phases can be seen in the cytokinesis
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“Cells are the building blocks of tissues and therefore multicellular organisms. Using specific examples‚ describe some of the mechanisms used by cells to provide organisation within tissues containing different cell types.” One cannot adequately contemplate the organisation of tissues‚ let alone organisms. Words fall short when explaining the sheer vastness of their complexity. It is incredible that such astonishingly patterned structures can be formed from so many individual cells but greater
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