0610_w18_qp_32
A paper of Biology, 0610
Questions:
9
Year:
2018
Paper:
3
Variant:
2
Login to start this paper & get access to powerful tools
1
The boxes on the left contain the names of processes from the carbon cycle. The boxes on the right contain some descriptions of processes. Draw one straight line from each process to link the process to its description. An example has been done for you. combustion decomposition feeding fossilisation photosynthesis respiration breakdown of dead or waste organic matter burning chemical reactions in cells that break down nutrient molecules to release energy conversion of the remains of organisms into fossils ingestion of organic material maintenance of a constant internal environment manufacture of carbohydrates from raw materials using energy from light process description
6. Plant nutrition  →  6.1. Photosynthesis
19. Organisms and their environment  →  19.3. Nutrient cycles
Open
2
Some students investigated the conditions needed for the germination of maize seeds. They used maize seeds from a packet of seeds they had purchased in a shop. Three dishes were used, each containing cotton wool and the same number of maize seeds, as shown in . maize seed cotton wool Table 2.1 shows the conditions provided for each dish. Table 2.1 conditions dish A B C treatment of cotton wool damp dry damp temperature / °C light or dark light light dark The seeds were left for five days and then observed. The results are shown in Table 2.2. Table 2.2 dish results A all seeds germinated B no seeds germinated C no seeds germinated Explain why the seeds in dishes B and C did not germinate. Dish B Dish C In a second investigation, maize seeds were placed in a dish containing damp cotton wool. This dish was left in the dark for five days at 20 °C. Predict and explain the results. prediction explanation A student gathered 70 maize seeds from plants growing in a field. The seeds were placed in dishes containing damp cotton wool. After five days only 64 seeds had germinated. Calculate the percentage of seeds that germinated. Show your working. Give your answer to the nearest whole number. % Suggest a reason why some of the seeds did not germinate.
16. Reproduction  →  16.3. Sexual reproduction in plants
3. Movement into and out of cells  →  3.2. Osmosis
Open
3
This question is about biological molecules. Choose words or phrases from the list to complete the sentences. Each word or phrase may be used once, more than once, or not at all. calcium carbon carbon dioxide carbohydrate cellulose chloroplasts fat glycerol glycogen iron methane nitrogen oxygen protein starch Fats are composed of the elements , hydrogen and only. All proteins contain these three elements and the element . Glucose is a type of . Animals store excess glucose as in the liver. Plants store excess glucose as . Plants also convert glucose to which is used to make cell walls.
4. Biological molecules  →  4.1. Biological molecules
6. Plant nutrition  →  6.1. Photosynthesis
Open
4
shows teeth in a human skull. Add label lines and labels to to identify an incisor tooth and a molar tooth. represents the teeth of two adults, D and E. It shows the numbers of the types of teeth and the number of decayed teeth. incisors canines premolars molars healthy teeth decayed teeth types and health of teeth number of teeth adult D incisors canines premolars molars types and health of teeth number of teeth adult E key: A healthy adult human has 32 teeth. State the number of teeth E has lost. State the number of decayed teeth present in D. Suggest two reasons why D and E have different numbers of decayed teeth. Identify the type of tooth that decays most frequently in . Describe how bacteria are involved in tooth decay.
7. Human nutrition  →  7.3. Physical digestion
Open
5
shows a diagram of part of the alimentary canal and associated structures. H J State the names of the structures labelled H and J. Write your answers on . On draw label lines with letters to show: N where faeces are stored P where most water is absorbed R where digested food is absorbed. State the name of the process that is defined as the movement of digested food molecules into the cells of the body where they are used, becoming part of the cells. State the name of the process that removes faeces from the body. shows how the rate of reaction of a digestive enzyme changes with pH. 0.0 1.0 2.0 3.0 4.0 5.0 6.0 pH rate of reaction / arbitrary units Describe the effect of the increase in pH on the rate of reaction shown in . State one factor other than pH that will affect enzyme activity.
5. Enzymes  →  5.1. Enzymes
7. Human nutrition  →  7.2. Digestive system
Open
6
shows the sequence of events that occur in sexual reproduction. sperm cell egg cell S T ball of cells not to scale State the name of cell T in . State the name of the process that takes place at S to form cell T in . State where in the human body process S takes place. Some humans have the ability to roll their tongues and some cannot roll their tongues. This characteristic is controlled by genes. shows two boys: boy A cannot roll his tongue and boy B can roll his tongue. boy A boy B The allele for tongue rolling (T) is dominant to the allele for non-tongue rolling . shows a family tree for this characteristic. Individual 1 and his partner are both heterozygous for tongue rolling. Key: male tongue roller male non-tongue roller female tongue roller female non-tongue roller Fig 6.3 Complete Table 6.1 by inserting the genotypes of the numbered individuals in . Table 6.1 individual genotype Individual 2 in is heterozygous for tongue rolling. He marries a woman who cannot roll her tongue. State all of the possible genotypes of their children and predict the ratio of phenotypes for their children. possible offspring genotypes: ratio of phenotypes:
17. Inheritance  →  17.4. Monohybrid inheritance
Open
7
Complete the sentences by placing appropriate words in the spaces to give a definition of transpiration. In transpiration water is lost from the of a plant. The water from the surface of the cells and water vapour is produced. The water vapour moves by out of the plant through pores called . Complete Table 7.1 by • stating two environmental conditions that affect the rate of transpiration • stating how a decrease in each environmental condition affects the rate of transpiration. Table 7.1 environmental condition effect of a decrease on the rate of transpiration
8. Transport in plants  →  8.3. Transpiration
Open
8
shows a photomicrograph of some red blood cells. State the function of a red blood cell. State two ways in which a red blood cell is adapted to its function. State the name of a component of blood that is responsible for clotting. State the name of the disease caused by a blockage in the arteries supplying the heart muscle. List three risk factors that increase the risk of a blockage in the arteries supplying the heart muscle. is a diagram of the circulatory system. The blood vessels are labelled with letters. lungs heart kidneys legs D E F B C G A Fig 8.2 Complete Table 8.1 by identifying the letter of the named blood vessels in . Table 8.1 name of blood vessel letter aorta pulmonary artery renal vein vena cava Describe how the structures of the circulatory system maintain a one-way flow of blood.
9. Transport in animals  →  9.3. Blood vessels
9. Transport in animals  →  9.1. Circulatory systems
Open