Unit b - section 2.2 vital roles that cell structures play
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The document summarizes the main organelles found in animal and plant cells. It describes the nucleus as the brain that directs cell activities, the cell membrane as a selectively permeable gateway, and the cytoplasm as the kitchen where nutrients are kept. Mitochondria are described as the powerhouses that generate energy for the cell. Vacuoles are storage rooms for nutrients and waste. Plant cells contain additional structures like the cell wall, chloroplasts, and a large central vacuole.
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This is a ppt on the basic structures and functions of cells. This is recommended for lower secondary students
Cells and their organelles
There are two main types of cells: prokaryotic cells which lack membrane-bound organelles and eukaryotic cells which contain organelles enclosed in membranes. Eukaryotic cells can be either animal or plant cells. Both contain organelles such as a nucleus, mitochondria, ribosomes, and endoplasmic reticulum. However, plant cells also contain chloroplasts and have a cell wall and central vacuole, while animal cells do not have these structures. The organelles work together to carry out essential functions like DNA storage, protein production, photosynthesis, and transport within the cell.
4
This document provides an overview of eukaryotic cell structure and organelles. Eukaryotic cells contain a nucleus and membrane-bound organelles, unlike prokaryotic cells. The organelles each have specific functions like the cytoskeleton providing structure, mitochondria generating energy, and the Golgi complex packaging and transporting materials within the cell. Plant cells contain chloroplasts for photosynthesis and a cell wall and central vacuole in addition to these common eukaryotic organellar structures and functions.
Cells
The document discusses the basic structure and components of plant and animal cells. It explains that cells are the smallest unit capable of life functions and are made of organelles like the cell membrane, nucleus, chloroplasts and vacuoles. The key differences between plant and animal cells are that plant cells contain cell walls, chloroplasts and usually a large central vacuole.
Cells cells-cells-2008-1224527915954321-8
Cells are the basic unit of all living things. They have organelles that perform specific functions to keep the cell alive. Plant and animal cells differ in structures like plant cells having a cell wall and chloroplasts. Organelles like the nucleus, mitochondria, chloroplasts, and ribosomes each have important roles in cellular functions and homeostasis. Cells come from other living cells according to the cell theory.
Organelle Chart Key
The document describes the major organelles and structures found within plant, animal, and bacterial cells and their locations and functions. It provides a table with the following columns: cell part, function/description, whether it is found in plant, animal, or bacterial cells, and its location within the cell. The key cellular components it outlines include the cell wall, cell membrane, nucleus, nuclear envelope, chromatin, nucleolus, cytoplasm, mitochondria, endoplasmic reticulum, ribosomes, Golgi bodies, chloroplasts, vacuoles, and lysosomes.
Animalcellsandplantcells
The document describes the key structures and functions of plant and animal cells. It states that both cell types contain a cell membrane, nucleus, and cytoplasm. The nucleus acts as the control center while the cytoplasm is the fluid that holds cell components. Unique to plant cells are chloroplasts that perform photosynthesis, and a cell wall that provides structure and support. Animal cells lack a cell wall. Both cell types receive inputs and outputs through the cell membrane, while the nucleus stores genetic information to direct cell activities.
grade7plantvanimalcell.pptx
Plant and animal cells share several organelles but also contain structures unique to their domain. Organelles common to both include the nucleus, which houses DNA in chromosomes and directs cell activities, cytoplasm that surrounds organelles, and cell membrane that encloses the cell. Organelles like mitochondria, ribosomes, vesicles, vacuoles, Golgi bodies and peroxisomes are also shared. Animal cells alone contain centrosomes and lysosomes while plant cells uniquely have chloroplasts for photosynthesis and cell walls for structure and support. Both plant and animal cells are the basic functional units of life.
Cell Project
1. Plant cells contain organelles that animal cells do not, such as a cell wall, chloroplasts, and larger vacuoles.
2. The organelles in plant cells include the nucleus, vacuoles, mitochondria, chloroplasts, endoplasmic reticulum, ribosomes, Golgi complex, cytoplasm, and cell membrane.
3. While plant cells contain more types of organelles, the document notes that animal cells seem more complex than plant cells in reality.
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To reverse or irreverse t chart
Reversible processes can be reversed by changing conditions while irreversible processes result in increased entropy and cannot be reversed. Many natural processes are irreversible, such as heat transfer from a hot object to a cold one, or chemical reactions that produce waste. While reversible processes are theoretically possible, most natural processes occur irreversibly.
Reverseirreverse examples
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The document contains instructions and observations for 5 student groups to conduct experiments on reversible and irreversible changes. Group 1 mixes different substances with water, vinegar or lemon juice to observe if reactions are reversible or irreversible. Group 2 burns different materials to observe changes. Group 3 heats materials to observe melting or other changes. Group 4 uses plaster of Paris and notes its properties. Group 5 observes dough rising before and after leaving it to rise.
To reverse or irreverse t chart
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To reverse or irreverse t chart
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Science practice quiz
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Unit d - section 2.3 -- external forces
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Unit d - 2.2 external forces
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Unit b - section 2.2 vital roles that cell structures play
- 2. Within each cell there are specialized structures called organelles that perform specific functions. Think of them as living factories; they create everything they need to survive.
- 4. The main ones we will focus on for now are; › Nucleus › Cell Membrane › Cytoplasm › Mitochondria › Vacuoles
- 6. The brain of the cell, it runs the whole show Directs all activities within the cell such as growing, moving and reproduction.
- 8. A “controlled gateway” that allows materials in and out of the cell Uses diffusion Is selectively permiable
- 10. Is considered the “kitchen” of the cell Is the space where all the nutrients are kept that assist the cell in its life processes Largest part of the cell
- 12. In the shape of a peanut Is called the “powerhouses” of the cell because all the chemical reactions take place Turns the energy the cell receives into a form it can use
- 14. “Storage rooms” within the cell Nutrients, water, and other substances are stored here Animal cells commonly have many vacuoles
- 16. Have all of the organelles listed in the ANIMAL CELL, but has a few extra ones; › Cell Wall › Chloroplasts › Vacuoles (different)
- 18. The “frame” of the plant cell Only found in plant cells, are a means of structure and support for the cell Look like a GREEN BRICK WALL
- 20. The “solar panels” of the plant cell Are found in the green parts of the plants Carry out photosynthesis; convert the suns energy into food for the cell
- 22. Only have one massive vacuole, opposed to animals many Major Storage unit Most noticeable section of the plant cell