Flashcards
Cells, Tissues and Organs
Cards in this deck (22)
- 1NucleusControls all the activities of the cell. It contains the genes on the chromosomes. They carry instructions for making new cells or new organisms.
- 2CytoplasmA liquid gel in which most of the chemical reactions needed for life take place.
- 3Cell membraneControls the passage of substances into and out of the cell.
- 4MitochondriaStructures in the cytoplasm where oxygen is used and most of the energy is released during respiration.
- 5RibosomesWhere protein synthesis takes place. All the proteins needed in the cell are made here.
- 6Cell WallMade of cellulose that strengthens the cell and gives it support.
- 7ChloroplastsAre found in all the green parts of the plant. They are green because they contain the green substance chlorophyll.
- 8ChlorophyllThe green pigment contained in the chloroplasts.
- 9Permanent VacuoleA space in the cytoplasm filled with cell sap. This is important for keeping the cells rigid to support the plant.
- 10Are Human cells the same as other animal cells?Most human cells are like most other animal cells and contain a nucleus, cytoplasm, cell membrane, mitochondria and ribosomes.
- 11How do plant and algal cells differ from animal cells?Plant and algal cells contain all the structures seen in animal cells as well as a cell wall. Many plant cells also contain chloroplasts and a permanent vacuole filled with sap.
- 12What are bacterial cells like?A bacterial cells consists of cytoplasm and a membrane surrounded by a cell wall. The genes are not in a distinct nucleus.
- 13How are yeast cells different form bacterial, plant and animal cells?Yeast cells are single-celled organisms; furthermore the yeast cells are not living organisms.
- 14Specialised CellsCells that carry out a particular function.
- 15Examples of specialised cellsFat Cells, Cone cells, root hair cells and sperm cells
- 16DiffusionThe net movement of particles of a gas or a solute from an area of high concentration to an area of low concentration.
- 17What affects the rate of diffusion?The greater the difference in concentration, the faster the rate of diffusion.
- 18What is a Tissue?A tissue is a group of cells with similar structure and function.
- 19What is an organ?Organs are made of tissues. One organ may contain several types of tissue.
- 20What are group systems?Organ systems are groups of organs that perform a particular function.
- 21What organs form the digestive system?The stomach and the small intestine.
- 22What are plant organs?Plant organs include stems, roots and leaves.
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- GCSE Biology Additional Science (AQA) Flashcards on Cells, Tissues and Organs, created by yusanr98 on 02/04/2014.
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