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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)

Vitamins

Biology exam papers can be very repetitive, so looking over past questions and papers over and over again and finding out the answers to all of them really helps prepare for what would come up in the exam. Questions on the practical experiments come up every year so you need to know all of them. It’s also essential that you know all the definitions for different topics.

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LC Biology

Enzymes - Sample answers 2007 - 2018

2007

WHAT IS MEANT BY IMMOBILISATION?

Means fixed in place. Immobilised enzymes are enzymes that are attached,or fixed to each other or to an inert material.

NAME A SUBSTANCE THAT IS USED TO IMMOBILISE ENZYMES?

Sodium Alginate

2 ADVANTAGES OF IMMOBILISING ENZYMES?

  • Can be reused. This is a huge advantage as the cost of replacing enzymes are very high.
  • The process of immobilising an enzyme increases its stability

ONE APPLICATION OF A NAMED IMMOBILISED ENZYME - REFER TO SUBSTRATE, PRODUCT & ENZYME.

Lactase is an immobilised enzyme in porous beads and used to convert lactose into sweeter tasting... (More)