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LC Biology
LC Biology
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LC Biology

All Biology Definitions for Leaving Cert

The Scientific Method

  • Scientific Method is a process of investigation where problems are identified and their explanations are tested by carrying out experiments.
  • Observation : An unbiased, accurate report of an event.
  • Hypothesis : An educated guess based on observations.
  • Experiment : An experiment is designed to test a hypothesis.
  • Data : Consists of measurements, observations/information gathered during an experiment.
  • Replicate : A repeat of an experiment.
  • Control : A comparison used to provide a standard against which the actual experiment can be judged.
  • Theory : A hypothesis that has been supported by different experiments.
  • Principle/Law : A theory that... (More)

Teeth

There are 4 types of teeth.

  1. Incisors- there are 8 incisors, 4 on the top and 4 on the bottom. They are sharp teeth at the front which cut food.
  2. Canines- there are 4 canines, 2 on the top and 2 on the bottom. They are pointed teeth which tear the food.
  3. Premolars- there are 8 premolars, 4 on the top and 4 on the bottom. They are large flat teeth which grind the food.
  4. Molars- there are 12 molars, 6 on the top and 6 on the bottom. They are large flat teeth at the back of the mouth... (More)

Parts and functions of the eye

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LC Biology

Expermients Summary - Section B

EXPERIMENT QUESTIONS

1. (a) TEST FOR REDUCING SUGAR:

FOOD SOURCE: Glucose (monosaccharide)

CHEMICAL USED: Benedict’s solution (blue)

HEAT REQUIRED: Yes (thermostatically controlled water bath)

+ RESULT: Colour change BLUE to BRICK RED

- RESULT: No colour change (stays blue)

CONTROL: Water + Benedict’s (non-reducing sugar)

PURPOSE OF CONTROL: Acts as a comparison

1. (b) TEST FOR STARCH:

FOOD SOURCE: Potato/ Bread

CHEMICAL USED: Iodine (red/yellow), using a dropper due to small volume needed

HEAT REQUIRED: No

+ RESULT: Colour change RED/ YELLOW to BLUE/BLACK

- RESULT: No colour change (stays red/yellow)

CONTROL: Water and Iodine

1. (c) TEST FOR... (More)