Note:

2019 IGCSE Biology Past Papers /Paper 2/Multiple Choice

0610_s19_qp_21 Analysis:

Questions answered correctly by most candidates:  6, 10, 12, 17, 20, 24, 29, 30, 31 and 40

Common Mistakes:

• Question: 4: Many candidates incorrectly believed that all plant cells contain chloroplasts
• Question 11 : Some  incorrectly thought that an animal needed to be present for respiration to occur.
• Question 14: The concept of changing water potentials proved to be challenging for many.
•  Question 15 : Some  incorrectly believed that the roots did not have enough water or that they had too much oxygen.
• Question 26:  Some incorrectly thought that rods are found in the fovea.
• Question 32 : The commonest incorrect response was to select the daughter cell with half the chromosome number.
• Question 36: Some incorrectly believed that fossilisation releases carbon dioxide.
• Question 37 : Community was the commonest incorrect response.
• Question 38 : Some  incorrectly opted for the strand of DNA
• Question 39: Some incorrectly opted for ‘taking gas from under the earth’s surface.’

0610_s19_qp_22 Analysis:

Common Mistakes:

Question 1: The commonest incorrect response was respiration.

Questions Answered Well by most:  3, 6, 7, 10, 12, 16, 17, 19, 20, 29, 30 and 37

Question 4 Many candidates incorrectly believed that all plant cells contain chloroplasts.

Question 5 : The commonest incorrect response was 8.75 µm suggesting that not all were confident when converting millimetres to micrometres.

Question 11: Some  incorrectly thought that an animal needed to be present for respiration to occur.

Question 13: some selected the value for 100 g fibre from the food

label (2.8 g).

Question 14: The concept of changing water potentials proved to be challenging for many.

Question 22: A common error was to place the trachea before the

larynx.

Question 23:The commonest incorrect response was to give the value for one molecule of glucose.

Question 25: This proved to be a challenging question with few able to identify the region that would have the highest

protein concentration.

Question 27 : Most candidates selected the correct response with only a few not appreciating how light affects the

distribution of auxin.

Question 34: Some did not recall that genes are not of amino acids.

0610_s19_qp_23 Analysis:

Questions 1, 17, 23 and 36.The majority of candidates gave the correct responses to these questions.

Common Mistakes:

Question 2:  Incorrect responses suggested that not all were certain of the difference between a genus and a species.

Questions 3: The most common incorrect response was ribosomes.

Question 4 Many  incorrectly believed that all plant cells contain chloroplasts.

Question 5: The commonest incorrect response suggested that not all were confident when converting millimetres to micrometres.

Question 9 : The most common incorrect response was that fatty acids are basic units of glycogen.

Question 11: Some candidates incorrectly thought that an

animal needed to be present for respiration to occur.

Question 12: Some candidates were able to recognise which cell is from the upper epidermis of a leaf.

Question 14: The concept of changing water potentials proved to be challenging for many.

Question 15: Some  incorrectly believed that starch is digested in the stomach.

Question 25: Some were uncertain as to which substance is absent

from fresh dialysis fluid.

Question 26: Candidates found the topic of accommodation in the eye challenging with only a few selecting the correct

response.

Question 27: Some were uncertain as to whether glucagon increases or decreases blood glucose concentration.

Question 28: Some incorrectly thought that antibiotics are effective

against viral diseases.

Question 29: Most candidates were uncertain about the site of progesterone production.

Question 30: The most common incorrect response was flagellum.

Question 32: The commonest

incorrect response was to select the daughter cell with half the chromosome number suggesting uncertainty about the differences between mitosis and meiosis.

Question 33: Many did not know that the function of the ribosome was to assemble amino acids.

Question 34: A common misconception was that, colour blindness also shows co-dominance.

Question 39: The most common incorrect response was that ligase is responsible for cutting the plasmid.

Happy Learning,

Team,

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