Biology
In this section is a practice examination paper, similar to the Cambridge International AS Level Biology paper 2. All of the questions are based on the topic areas described in the previous sections.
Youhave 1 hour and 15minutes to do the paper. There are 60 marks on the paper, so you can spend just over one minute per mark. If you find you are spending too long on one question, then move on to another that you can answer more quickly. If you have time at the end, then come back to the difficult one.
Some of the questions require you to recall information that you have learned. Be guided by the number of marks awarded to suggest how much detail you should give in your answer. The more marks there are, the more information you need to give.
Some of the questions require you to use your knowledge and understanding in new situations. Don't be surprised to find something completely new in a question - something you have not seen before. Just think carefully about it, and find something that you do know that will help you to answer it.
Do think carefully before you begin to write. The best answers are short and relevant - if you target your answer well, you can get a lot of marks for a very small amount of writing. Don't say the same thing several times over, or wander off into answers that have nothing to do with the question. As a general rule, there will be twice as many answer lines as marks. So you should try to answer a 3 mark question in no more than 6 lines of writing. If you are writing much more than that, you almost
certainly haven't focused your answer tightly enough.
Look carefully at exactiy what each question wants you to do. For example, if it asks you to 'Explain', then you need to say how or why something happens, not just describe what happens. Many students lose large numbers of marks by not reading the question carefully.
Following each question in the practice paper overleaf, there is an answer that might get a C or D grade, followed by an examiner's comments. Then there is an answer that might get an A or B grade, again followed by an examiner's comments. You might like to try answering the questions yourself first, before looking at these.
Notice that there are sometimes more ticks on the students' answers than the number of marks awarded. This could be because you need two correct responses for one mark (e.g.QI (a) (I))or because there are more potential mark points than the total number of marks available (e.g. QI (a) (U)). Even if you get four or five ticks for a three-mark question, you can't get more than the maximum three marks.
- Homework
Food chains and webs questions (the previous homework) Finish the analysis questions. Please make sure that all your answers are clear, detailed and answer the question. Make sure that you look up any spellings that you are unsure of. Your homework...
- #83 Question 6
The diagram below shows pressure changes in the left atrium and left ventricle of the heart and the aorta during the cardiac cycle. (a) Calculate how many heart beats there will be in one minute. (2 marks)(b) (i) On the diagram, indicate the point at...
- #82 Question 5
The diagram below shows a small part of a human lung as it appears through a microscope. (a) Name the type of blood vessel in which the red blood cell is present. (1 mark)(b) Describe and explain two ways in which the structure of the alveoli, shown...
- #81 Question 4
The diagrams below show five molecules found in living organisms. (a) Give the letter of one molecule that fits each of these descriptions. You can use each letter once, more than once or not at all. (i) the form in which carbohydrates...
- #78 Question 1
(a) The diagram shows a small part of a cell, as seen using an electron microscope. (i) Name the parts labelled A to D. (2 marks) (ii) Describe how part B is involved in the formation of extracellular...
Biology
#77 Questions and answers
Youhave 1 hour and 15minutes to do the paper. There are 60 marks on the paper, so you can spend just over one minute per mark. If you find you are spending too long on one question, then move on to another that you can answer more quickly. If you have time at the end, then come back to the difficult one.
Some of the questions require you to recall information that you have learned. Be guided by the number of marks awarded to suggest how much detail you should give in your answer. The more marks there are, the more information you need to give.
Some of the questions require you to use your knowledge and understanding in new situations. Don't be surprised to find something completely new in a question - something you have not seen before. Just think carefully about it, and find something that you do know that will help you to answer it.
Do think carefully before you begin to write. The best answers are short and relevant - if you target your answer well, you can get a lot of marks for a very small amount of writing. Don't say the same thing several times over, or wander off into answers that have nothing to do with the question. As a general rule, there will be twice as many answer lines as marks. So you should try to answer a 3 mark question in no more than 6 lines of writing. If you are writing much more than that, you almost
certainly haven't focused your answer tightly enough.
Look carefully at exactiy what each question wants you to do. For example, if it asks you to 'Explain', then you need to say how or why something happens, not just describe what happens. Many students lose large numbers of marks by not reading the question carefully.
Following each question in the practice paper overleaf, there is an answer that might get a C or D grade, followed by an examiner's comments. Then there is an answer that might get an A or B grade, again followed by an examiner's comments. You might like to try answering the questions yourself first, before looking at these.
Notice that there are sometimes more ticks on the students' answers than the number of marks awarded. This could be because you need two correct responses for one mark (e.g.QI (a) (I))or because there are more potential mark points than the total number of marks available (e.g. QI (a) (U)). Even if you get four or five ticks for a three-mark question, you can't get more than the maximum three marks.
- Homework
Food chains and webs questions (the previous homework) Finish the analysis questions. Please make sure that all your answers are clear, detailed and answer the question. Make sure that you look up any spellings that you are unsure of. Your homework...
- #83 Question 6
The diagram below shows pressure changes in the left atrium and left ventricle of the heart and the aorta during the cardiac cycle. (a) Calculate how many heart beats there will be in one minute. (2 marks)(b) (i) On the diagram, indicate the point at...
- #82 Question 5
The diagram below shows a small part of a human lung as it appears through a microscope. (a) Name the type of blood vessel in which the red blood cell is present. (1 mark)(b) Describe and explain two ways in which the structure of the alveoli, shown...
- #81 Question 4
The diagrams below show five molecules found in living organisms. (a) Give the letter of one molecule that fits each of these descriptions. You can use each letter once, more than once or not at all. (i) the form in which carbohydrates...
- #78 Question 1
(a) The diagram shows a small part of a cell, as seen using an electron microscope. (i) Name the parts labelled A to D. (2 marks) (ii) Describe how part B is involved in the formation of extracellular...