Biology

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  • Created by: emilynxn
  • Created on: 12-05-15 09:24
Cell Wall
Only in plants. Holds in fixed position; stops too much water consumption and from bursting.
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Cell Membrane
All cells have this. It controls movement of substances in and out of the cell.
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Cytoplasm
Jelly-like substance which holds the organelles. Also a transport system called cytoplasmic streaming.
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Nucleus
Control center of cell with chromosomes inside which make DNA which carry info about proteins.
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Nucleolus
Darkened part of nucleus. Contains genetic info for production of ribosomes.
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Chloroplasts
Responsible for process of photosynthesis
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Vacuole
Fluid filled storage spaces (sacks). Plants have large ones full of cell sap. Contains water, salts, sugars, acids and chemicals.
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Mitochondrion
Power house of cells. Respiration occurs here.
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Lysosome
Stores digestive enzymes that break down old organelles and some complex molecules.
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Ribosome
Responsible for protein synthesis. Often found on the ER
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Endoplasmic Reticulum
Transport system for proteins throughout cell. Smooth ER transports lipids, rough transports proteins.
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Golgi Body
Sorts and packages protein for secretion. Create lysosomes and transport lipids.
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Cell Theory
All living things are made up of cells. Cells are the smallest living units of life. All cells come from pre-existing cells.
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Robert Hooke
First person to use the term 'cell' when describing cork.
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Robert Brown
Discovered the nucleus of plants.
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Chemicals in cells
Nucleic acid, proteins, carbohydrates, lipids, water, sodium chloride, carbon dioxide and oxygen.
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Human Impacts
Land clearance, slash and burn agriculture, integrated pest management, land and water degradation, erosion, soil acidification, soil and water salinity, polluting the atmosphere and introduced species.
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Allelopathy
Chemicals are released into the soil by plants to influence another. Example: Pine tree's needles drop to the ground and decompose, releasing chemicals which stop plants growing too close.
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Parasitism
Parasite feels on hots's tissue. Example: Tape worm in human.
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Mutualism
Two species have some benefit from living together. Example: Clown fish and sea anemone.
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Commensalism
One is benefited and another is unharmed. Example: Fig growing up another trees trunk to get closer to the sun.
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Food Chain
Shows the movement of energy from one living thing to another.
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Food Web
Shows the complex food interaction within an ecosystem.
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Trophic Levels
producer --> herbivore --> carnvivore
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Reliability
The degree to which an assessment tool produces stable and consistent results. Improvement: do more tests are average it out.
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Validity
Refers to how well a test measures what it is purported to measure. Improvements: make sure it is a fair test. FORMULA ... ICDRC
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Fluid Mosaic Model
Current model of the cell membrane. Made of a double layer of phospholipids, which have hydrophobic tails and hydrophilic heads.
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Surface Area To Volume Ratio
Cells have a large SA:V. The larger the SA:V, the GREATER the rate of movement of substances into and out of the cell.
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Diffusion
The movement of any molecules from a region of high concentration to low concentration until equilibrium is reached.
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Osmosis
The movement of WATER molecules from a region of high concentration to low concentration through a selectively permeable membrane.
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Light Microscope
Cheaper, observe living tissue, only see basic organelles in less detail.
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Electron Microscope
More expensive, only observe dead tissue, high magnification and resolution.
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Photosynthesis
Carbon Dioxide + Water --> Glucose + Oxygen ....... 6CO2 + 6H2O --> C6H12O6 + 6O2
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Respiration
Glucose + Oxygen --> Carbon Dioxide + Water + Energy (ATP) ....... C6H12O6 + 6O2 --> 6CO2 + 6H2O + Energy
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Sampling Methods
Random quadrats, transects and mark-release-recapture (CxR/MR)
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Test for Glucose
Benedict's solution
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Test for Starch
Iodi
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Test for Glucose
Benedict's solution
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Test for Starch
Iodine
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Test for Lipids
Brown Paper
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Other cards in this set

Card 2

Front

All cells have this. It controls movement of substances in and out of the cell.

Back

Cell Membrane

Card 3

Front

Jelly-like substance which holds the organelles. Also a transport system called cytoplasmic streaming.

Back

Preview of the back of card 3

Card 4

Front

Control center of cell with chromosomes inside which make DNA which carry info about proteins.

Back

Preview of the back of card 4

Card 5

Front

Darkened part of nucleus. Contains genetic info for production of ribosomes.

Back

Preview of the back of card 5
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