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General Information

Biology Leaving Cert

 
The aim of the syllabus is to give students a better understanding of biology as a pure science as well as any other aspects to it.
 
The course has three main units:
Biology- the study of life
The Cell
The organism
 

Subject/Course Choice

If students are looking to do a course in Science, Information Technology or Engineering at third level this is a very good subject to study for the Leaving Certificate. If students excelled at Science at Junior Certificate this is very likely a good match for them if they want to pursue the above courses.
 
This is most popular of the science subjects at Leaving Certificate as studying this subject has benefits at Third Level for the following courses:
  • Medicine
  • Nursing
  • Physiotherapy
  • Veterinary

 Did you know!

Biology is more popular with girls than boys and this may be due to the fact that Medicine Nursing and Physiotherapy are more popular with girls, this is reflected in the statistics below.

In 2010 a total of 20971 students took Biology at Leaving Cert. 13678 girls took Biology at Leaving Cert. at Higher Level while 7293 boys did Biology at Higher Level in 2010.

  • 17.4% of students got an A
  • 27.5% of students got a B
  • 25.7 % of students got a C
  • 20.2 % of students got a D
  • 9.2% of students failed

 

Definitions

 

  • Autotroph: Aliving organism that makes its own complex organic matter from simple inorganic substances.
  • Heterotroph a living organism that obtains its nutrients by consuming complex organic matter it cannot make its own food. All animals and fungi are heterotrophs. Most bacteria are heterotrophs.
  • Excretion is the removal of the waste products of metabolism from the living organism.
  • Sensitivity the ability of an organism to detect changes in its external and internal environment and make adaptive alterations to its activities that enhance its chances of survival and reproduction.
  • Reproduction is the formation of a new living organism of the same species.
  • Movement the purposeful alteration of posture or position in response to a change in the internal or external environment of the organism.
  • Biological growth involves increase in cell size and increase in cell number.
  • A biochemical is an organic substance produced by a living organism and has an important role in a metabolism.
  • Ecology the study of the home of living organisms, their interactions with each other and their abiotic environments.
  • Habitat the place where an organism lives and to which it is adapted.
  • Population a group of individuals of the same species living and interbreeding in the same habitat
  • Ecosystem a self sustaining community of a organism and their abiotic environment. There is a great diversity of ecosystems: grassland, freshwater pond, hedgerow, forest, sea shore, woodland.
  • Niche the role a species plays in the dynamic integrated ecosystem. A species’ niche is a full description is a full description of how it is suited to the habitat, fits into the community and how it affects and is affected by abiotic and biotic factors. A species’ niche include where it lives, when it is active, what it feeds on, what feeds on it and its tolerance range for each abiotic factor.
  • Biosphere the part of the Earth  including the atmosphere inhabited by living organisms.
  • Abiotic factors: features of the non-living environment that influence the community.
  • Autotrophs organisms that can make their own food from inorganic sources.
  • Heterotrophs organisms that cannot make their own food.
  • Food chain a list of species each serving as a food source for the next species in the list; a specific pathway along which food (chemical energy) flows in the community.
  • Trophic level is the position of a species in a food chain is its trophic level.
  • Pyramid of numbers:  a modified bar chart showing the number of individuals at each trophic level of a specific food chain.
  • Food web:  A chart that shows the complex feeding relationships in a community.
  • Biotic factors influences of organisms on each other.
  • Competition the struggle between individuals of the same or different species for essential limited resources.
  • Predation the killing of one animal by another for food. A predator is an animal that hunts and kills another animal the prey for food.
  • Symbosis individuals of two or more species living in close association with each other where there is a benefit and loss for at least one of the specie
Exam Breakdown

Past Exam Breakdown Higher Level

Biology Higher Level

 

 

 

 

 

 

 

 

Topic

2010

2009

2008

2007

2006

2005

2004

2003

Nutrition 

Q1

Q1

Q1

Q1

Q6, Q13 

Q1

Q6, Q10

 

Ecology/Ecosystem

Q5,Q12

Q11

Q7, Q10

Q2

Q9, Q10

Q12

Q5, Q10

 

Respiration

 

Q12

Q5

 

Q4

Q11 

 

Q6, Q9 

Photosynthesis

Q14a

 

Q6, Q9

 

Q4, Q14

Q4, Q14

Q11

 

Genetics /DNA

Q2,Q10

Q6, Q10

Q5, Q11, Q 14(b) 

Q10

 

Q10

Q3, Q13

 

Viruses  

Q6

 

Q15

 

Q4

Q11,Q15

 

 

Scientific Method

Q8

Q3

Q15(a)

 

 

Q2 

 

Q2

Reproduction

Q15a

Q7, Q14(a)(b)

 

 

Q14, Q15 

Q13

Q14 

 

Fungi

 

 

Q8

 

 

Q15(c)

 

Q12(a)

Enzymes

Q14b

Q9

Q9

Q7

Q3

 

 

 

Bacteria  

 

Q14(c)

Q15 (c)

 

 

Q15, Q15 (b)

 

Q.12 (b),(c)

Plant transport/Tropisms

Q4,

 

Q8 

 

 

Q4, Q14

 

 

Nervous System

Q11

 

Q4

 

Q14(b)

 

 

 

Musculoskeleton

Q7

Q4

Q15(a)

 

Q15(a)

 

 

 

Mitosis/Meiosis

Q14c

Q5

Q2, Q3

 

 

Q5

 

 

Amoeba

Q3

 

 

 

 

 

 

 

Plant Fertilisation

Q13

 

 

 

 

 

 

 

Liver

Q15b

 

 

 

 

 

 

 

Hormones 

 

 

 

 

 

Q14

Q15(c)

 

Excretion

 

 

Q13

 

 

 

 

 

Circulation

 

Q13

 

 

Q13

 

 

 

Flowering Plants Structure

 

Q8

 

 

 

 

 

 

Plant Responses

Q9

Q2

 

 

 

 

 

 

Vegetation Propagation of Flowering Plants

 

Q15(a)

 

 

 

 

 

 

 

 

Past Exam Breakdown Ordinary Level

Topic 2010 2009 2008 2007 2006 2005 2004 2003
Cells Q3,Q9     Q3   Q2,Q6a Q7 Q7,Q9
Evolution   Q3 Q11c Q8     Q2  
Nutrition  Q2 Q1,Q7   Q1   Q5 Q5,Q10  
Ecology/Ecosystem Q1,Q10 Q2,Q10 Q1,Q10b,Q10c Q2,Q9,Q10 Q1,Q8,Q10 Q1,Q10 Q6,Q8 Q3,Q13
Respiration   Q15b Q3,Q8,Q14c Q12 Q13 Q12   Q6
EAR Q5           Q15b  
EYE     Q14b         Q15a
Digestive System/Metabolism Q12a,b,Q13   Q13   Q12     Q15c
Heart     Q4   Q7   Q9 Q10
Photosynthesis Q12c Q15a Q12 Q14   Q11 Q13 Q12
Genetics /DNA Q4,Q7a,Q11 Q11 Q5,Q11a ,Q11b Q4,Q11 Q11 Q13 Q3,Q12 Q8
Viruses     Q12            
Scientific Method                
Proteins     Q2   Q3      
Reproduction Q14       Q5 Q14b Q11  
Fungi                             Q15c   Q7          
Enzymes Q8 Q15c   Q7,Q15c   Q8   Q9
Bacteria     Q12 Q10a     Q6b    
Plant transport/Osmosis Q6 Q8,Q14a Q15 Q14a   Q7,Q15a    
Nervous System       Q15a Q15a   Q15c  
Musculoskeleton Q15b     Q6 Q15c   Q4 Q4,Q5
Mitosis/Meiosis   Q4     Q6 Q4    
Hormones                 
Excretion   Q14b Q6 Q14b Q15b Q14a    
Circulation   Q5,Q13       Q14c    
Pollination/Germination     Q14a     Q3,Q9   Q14
Flowering Plants Structure       Q5,Q15b Q2,Q4,Q14   Q14 Q2
Plant Responses Q15a Q6            
Vegetation Propagation of Flowering Plants Q14c Q9,Q14c Q9 Q14c Q8 Q15b    

 

Paper Layout

Biology Tips Leaving Cert Higher Level

Marks: 400
Time Allocated: 3 Hours
The paper is in three sections.

Section A – Short Answers

How should I approach Section A – the short answers? 
100 marks [5 x 20]  - ½ hour max
  • Answer all six questions
  • Answer all parts of all questions even if it is only a guess.
  • All answers will be marked and you will be given the best combination
  • Only one answer per part as a wrong answer will cancel out a correct answer in that part
  • Don’t assume that five one word answers will be worth 5 marks each – sometimes the first two correct answers are worth 7 marks each and any other correct answers are worth two marks each.  

Section B deals with the mandatory practicals on the course. 

How should I approach this section? 
60 marks [2 x 30]     20 min max
  • Answer all parts of the two questions of your choice.
  • Once again a blank space gets no marks while a correct guess will get you three marks.
  • If for any reason you put an answer to any questions in sections A or B in your answer booklet the write “see answer booklet” in the appropriate space of the question paper.

Section C is the long answer section.

Should I approach this in a different way?
200 marks  [4 x 50] – Max 25 min
  • Answer the question asked not the question you would like to be asked.
  • Scan through all questions and put the fraction of the question you are confident of answering beside the question e.g. 1, ¾, ½, ¼, 0
  • Select the questions with the biggest fractions first – hopefully four 1’s
  • Time is valuable so do NOT repeat the question in your answer. Just write the answer.
 

Where should I do rough work?

  • Do all rough work at the back of your answer booklet.
  • Put the question number and part in the margin. If it is in the answer booklet it will be marked and you will be awarded the marks even though it is not in your main answer
  • but if it is on the question paper it will probably not be marked

How long should my answer be?

  • In sections A and B

The space provided gives an indication of how long it should be for a person with average sized writing

  • In section C

Each correct relevant point of information is worth 3 marks

So if a question is worth 18 marks it will normally require 6 points of information. If you are able give a couple of extra points just in case you make a mistake

Do I have to draw fancy diagrams?

  • NO
  • Simple diagrams are all hat are required.
  • A diagram and its labels are usually worth 9 marks
  • 6, 3 or 0 for the diagram and one each for three correct labels unless more are asked for
  • If one important part is missing then you will get 3 marks and if two important parts are missing the you will get no marks.
  • Labels are marked separately and usually get one mark each  

Does spelling and grammar matter? 

  • Spelling and grammar do not normally matter once it is clear that you are trying to write the correct word e.g. fotosinsisis clearly means photosynthesis
  • There are however two cases where spelling matters
  • Adenine (a base in DNA and RNA) and adenosine (in adenosine triphosphate – ATP)
  • Ureter (the tube connecting the kidney and the bladder) and urethra (the tube connecting the bladder to the outside of the body)  

What should I do if I discover I have missed a part of a question and have no space where I answered the question originally? 

  • No problem
  • Just put it after the last question you answered
  • Make sure you number it clearly  and it is a good idea to write “see later” in your original answer

Should I do extra questions?

  • When you have finished answering the required number of questions. Go back over the paper making sure that you have attempted all parts of each question
  • Read all your answers and make sure they make sense – you would be amazed at the things people write under exam pressure
  • You have spent the last two years preparing for this exam so keep answering until you are told to stop. Everything you write will be marked and you will be given the best combinations of marks.
  • After analysing answers over the last five years
  • About 40% of pupils do an extra question
  • Of these about 4 out of 5 improve their final mark by doing so

CAUTION

  • Make sure you have answered all parts of the required questions before you start on extra questions
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