AS & A Level Biology (9700) — May–June 2024, Paper 11
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The diagram shows a stage micrometer scale viewed with an eyepiece graticule, using a magnification of x200. The eyepiece graticule is numbered 0 to 100. A span of 0.1 mm on the…
Answer this question and get it marked →Which range of cell diameters is typical for prokaryotic cells?
Answer this question and get it marked →The diagram shows a typical animal cell with three structures labelled. Label 1 indicates a small vesicle near the cell surface membrane; label 2 indicates rough endoplasmic…
Answer this question and get it marked →Which structure is found in a typical bacterial cell?
Answer this question and get it marked →What is the maximum number of hydrogen bonds that can form between a single water molecule and other water molecules?
Answer this question and get it marked →The diagrams show the structure of four amino acids in aqueous solution: glycine (R group is H, with COO- and N+H3 groups); lysine (R group is a -CH2-CH2-CH2-CH2-N+H3 chain, with…
Answer this question and get it marked →The table shows the number of carbon atoms and the number of carbon-carbon double bonds in molecules of three triglycerides and the fatty acids they contain. The information is…
Answer this question and get it marked →Collagen molecules are made up of three polypeptide chains interacting together. The individual polypeptide chains consist of a regular pattern of amino acids. Almost every third…
Answer this question and get it marked →The masses of the parts of haemoglobin are shown in the table: alpha-globin chain 15126 Da; beta-globin chain 15868 Da; haem group 617 Da. A haemoglobin molecule contains two…
Answer this question and get it marked →What is the correct order of locations in the cell for the production of an extracellular enzyme?
Answer this question and get it marked →The graph shows the trend from an enzyme-catalysed reaction. The y-axis variable rises to a peak and then falls back towards zero as the x-axis variable increases (a bell-shaped…
Answer this question and get it marked →Which statements about the Michaelis-Menten constant (Km) are correct? (1) The higher the Km, the higher the enzyme affinity for the substrate. (2) Km is a measure of the degree…
Answer this question and get it marked →The diagram shows how nicotine is transported from the blood plasma into a cell using a type of cotransporter mechanism. A cotransporter protein spans the cell surface membrane.…
Answer this question and get it marked →The diagram shows a simple metabolic pathway: W - X - Y - Z. The letters W, X, Y and Z represent four different substances. At each step the substrate undergoes a chemical…
Answer this question and get it marked →A student observed the effect of two different concentrations of salt solution on blood cells. The student added each concentration of salt solution to one of two microscope…
Answer this question and get it marked →Which statement correctly describes facilitated diffusion?
Answer this question and get it marked →Which row is correct for stem cells? The columns are 'can repair cells' and 'can be involved in the formation of phagocytes'.
Answer this question and get it marked →Eukaryotic organisms grow and increase in size as a result of cell division. The diagram shows some stages of mitosis with one stage missing, labelled X. The first image shows a…
Answer this question and get it marked →The graphs show various distance measurements taken from the start of metaphase of mitosis. The graphs are to scale when compared to one another. Graph X shows distance staying…
Answer this question and get it marked →Which row is correct for the start of anaphase of mitosis? The columns are 'form of DNA', 'DNA is associated with histone proteins' and 'state of the cell surface membrane'.
Answer this question and get it marked →The diagrams show the chemical structure of four bases. Base 1 is a double-ring (purine) structure with an NH2 group (adenine). Base 2 is a single-ring (pyrimidine) structure with…
Answer this question and get it marked →The diagram shows the nucleotide sequence of a small section of the transcribed (template) strand of a gene: CGG GCC CCG CGG. The table shows the amino acids coded for by 10 mRNA…
Answer this question and get it marked →What does the process of translation require?
Answer this question and get it marked →The electron micrograph shows a longitudinal section of part of the stem of a plant. The structure labelled X is an elongated cell with a thick, patterned (lignified) wall and no…
Answer this question and get it marked →Which substance makes xylem vessel walls impermeable to water?
Answer this question and get it marked →The following tissues carry an electrical impulse during the cardiac cycle: (1) atrioventricular node; (2) muscle wall of atria; (3) Purkyne tissue; (4) sinoatrial node. In which…
Answer this question and get it marked →The graph shows changes in the volume of the ventricles during a single cardiac cycle, divided into atrial systole, ventricular systole and diastole. Point P is at the start of…
Answer this question and get it marked →The graph shows how changes in oxygen concentration affect the percentage oxygen saturation of human haemoglobin and cat haemoglobin under normal physiological conditions. The…
Answer this question and get it marked →Which statement is correct about how oxygen combines with haemoglobin?
Answer this question and get it marked →How are alveoli adapted to their function?
Answer this question and get it marked →The diagram shows oxygen diffusing from the space inside an alveolus into the blood through the gaseous exchange surface. W is the oxygen concentration in the blood; X is the…
Answer this question and get it marked →Which tissues are present in a bronchus? The columns are cartilage, ciliated epithelium and smooth muscle (key: tick = present, cross = not present).
Answer this question and get it marked →Steep concentration gradients must be maintained for efficient gaseous exchange to occur in the human lungs. Which row correctly describes how steep concentration gradients can be…
Answer this question and get it marked →A scientist investigated the effect of an antibiotic on the treatment of cholera. 320 people with cholera were divided into two groups. One group was treated with the antibiotic…
Answer this question and get it marked →How does the antibiotic penicillin affect the metabolism of a bacterial cell?
Answer this question and get it marked →Scientists studied the multidrug-resistant bacterial infections in children caused by one type of bacteria between 2007 and 2015. The percentage of multidrug-resistant infections…
Answer this question and get it marked →Whooping cough is a highly infectious disease of the gas exchange system, caused by the bacterium Bordetella pertussis. Which method provides protection to infants against…
Answer this question and get it marked →The electron micrograph shows a type of blood cell. The cell has a multi-lobed nucleus and cytoplasm densely packed with extensive membranes and granules. What can be concluded…
Answer this question and get it marked →Why is mitosis important in the immune response?
Answer this question and get it marked →What is fused with a B-lymphocyte to form a hybridoma cell in monoclonal antibody production?
Answer this question and get it marked →