Learn Extracted exam questions IGCSE Biology 0610 Biology November 2025 Question Paper 22
0610 Biology November 2025 Question Paper 22
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The photographs show two different rats. Rattus norvegicus Rattus rattus Which statement about the rats is correct?
The diagrams show cells of organisms from three different kingdoms.
not to scale Which row shows the kingdoms for the organism cells labelled 1, 2 and 3? cell 1 cell 2 cell 3
Which term describes each structure? structure brain liver neurone
The diagram shows the order of bases along part of one strand of DNA. A―C―T―T―A―G―A―T What is the order of bases on the complementary part of the other strand?
Which substance is an enzyme?
Which function is performed in the duodenum?
The graph shows the changes in pH in the oesophagus, stomach and duodenum.
X oesophagus stomach region of the alimentary canal duodenum pH Which substance causes the change in pH at the point labelled X?
A student cut one stalk of celery from a celery plant. They put the celery stalk into a beaker of blue dye. The celery stalk was removed from the blue dye after two hours and was cut into sections. celery stalk blue dye two hours blue circles visible in the cut section What is shown by the blue circles in the cut sections of celery stalk?
Which process moves water from the surfaces of the mesophyll cells into the air spaces during transpiration?
The mass of water lost from a plant was investigated. The leaves of the plant were covered with a type of grease that acts as a waterproof barrier. The environmental conditions remained the same throughout the experiment. The table shows the results of the investigation. treatment mass lost in seven days / g no grease applied 12.0 grease applied only to the upper surface of every leaf 8.7 grease applied to both surfaces of every leaf 0.0 What is the mean daily rate of water loss through the upper surface of the leaves?
What is translocation?
Which row names the blood vessel containing the highest blood urea concentration and the blood vessel containing the lowest blood urea concentration? highest blood urea concentration lowest blood urea concentration
The diagram shows the human digestive system. Where do cholera bacteria cause the secretion of chloride ions? mouth anus
Which row describes what happens when breathing in? diaphragm external intercostal muscles
A person exercised vigorously for one minute and then rested for one hour. Which statements about lactic acid are correct? During exercise, lactic acid is produced in the muscles and diffuses into the blood. The blood transports lactic acid to the liver. Lactic acid is broken down by anaerobic respiration.
The diagram shows the parts of the nervous system involved in a reflex arc. Which letter identifies a synapse?
A person looks at a distant object in a dark area. The person then moves to a bright area and looks at a near object. Which statement describes some of the changes that take place in the person’s eyes?
Which effect does adrenaline have on blood glucose concentration and pulse rate? blood glucose concentration pulse rate
The diagram shows an experiment using two wheat shoot tips, X and Y. X Y X Y shoot tip removed after two days in even light Which statement is supported by the evidence provided by this experiment?
Which action would help to limit the development of antibiotic resistance in bacteria?
What is an example of asexual reproduction?
The diagram shows parts of two different plants, 1 and 2, of the same species. The transfer of pollen between the flowers of these two plants is shown by the arrows labelled P and Q. Q P Which arrows show cross-pollination, and which transfer of pollen would produce the most variation in the offspring? cross-pollination transfer of pollen that produces the most variation in the offspring
Which substance is a hormone that is involved in the development and regulation of male secondary sexual characteristics?
Which statement describes the net direction of movement of a substance across the placenta?
The diagram shows the human female reproductive system. Which label identifies the uterus?
Which methods can transmit HIV? hugging a person infected with HIV sharing a needle with a person infected with HIV using a plate that a person infected with HIV has used
Which chromosomes can be found in a single sperm?
Why are lymphocytes the only cells that produce antibody proteins?
During protein synthesis, what is the function of the ribosome?
The photograph shows a speckled chicken. Speckled chickens have white feathers and black feathers. When a chicken with only white feathers and a chicken with only black feathers are crossed, all of the offspring are speckled. What would be the expected phenotypic ratio if a speckled chicken was crossed with a chicken with only white feathers?
What are stem cells?
What are features of hydrophytes which have leaves that float?
Which unit could be used for the measurements needed to construct a pyramid of energy?
Which process needs microorganisms to break down protein to produce ammonium ions?
The graph shows part of a growth curve for a bacterial population. population size time What is not shown in the graph?
What is an advantage of large scale monocultures?
The graph shows the global emissions of carbon dioxide and methane from 1990 to 2015.
000 35 000 30 000 25 000 20 000 15 000 10 000 5000 emissions / million tonnes 1990 2015 2010 2005 2000 year 1995 key carbon dioxide methane A student makes four statements about carbon dioxide and methane. ● Carbon dioxide and methane were the only sources of greenhouse gases produced in 1990. ● Carbon dioxide emissions continue to rise to the present day. ● Carbon dioxide has a greater effect on climate change than methane. ● Methane emissions were lower than carbon dioxide emissions between 1990 and 2015. How many statements are supported by these data?