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True or False Questions from Exam Papers True or False RNA is not found in ribosomes. False 2 True or False HIV/AIDS has orphaned many children in sub-Saharan Africa. True 3 True or False Single-celled organisms use mitosis for reproduction. True 4 True or False Immobilised enzymes can act as catalysts. True 5 True or False All vitamins are fat soluble. False 6 True or False The growth response of a plant to light is phototropism. True 7 True or False The liver produces bile. True 8 True or False Humans receive oxygen from air they inhale. True 9 True or False Light is essential for the germination of seeds. False 10 True or False The cells produced by meiosis are haploid. True 11 True or False Cloned individuals are exactly the same. True 12 True or False A sperm contains the diploid number of chromosomes. False 13 True or False Chromosomes are made of DNA and lipid. False 14 True or False Vaccination gives rise to active immunity. True 15 True or False Meiosis gives rise to variation. True 16 True or False Food chains are usually short. True 17 True or False Lactic acid is a product of anaerobic respiration. True 18 True or False Organisms of the same species usually produce fertile offspring. True 19 True or False All individuals within a species are the same. False 20 True or False Chloroplasts contain DNA. True 21 True or False Enzymes are essential for metabolism. True 22 True or False Red blood cells have no nucleus. True 23 True or False The pacemaker is on the left side of the heart. False 24 True or False Motor neurons conduct impulses away from the CNS. True 25 True or False The growth response of a plant to chemicals is geotropism. False 26 True or False Monocotyledonous plants have parallel leaf veins. True 27 True or False Lenses closest to the stage are the eyepiece lenses. False 28 True or False Plant cell walls are fully permeable. True 29 True or False A polysaccharide contains many sugar units. True 30 True or False Meiosis is never involved in gamete formation. False 31 True or False Iodine turns starch to a blue-black colour. True 32 True or False Carbon dioxide is produced during respiration. True 33 True or False Immobilised enzymes cannot act as catalysts. False 34 True or False Bones are joined to other bones by ligaments. True 35 True or False Stage 2 of respiration takes place in the cytoplasm. False 36 True or False The cells produced by mitosis are identical. True 37 True or False DNA is a double helical shape. True 38 True or False Aerobic respiration is the release of energy in the absence of oxygen. False 39 True or False Eggs are a good source of fat in the diet. True 40 True or False Chromosomes are found in the nucleus. True 41 True or False Stage 1 of respiration requires oxygen. False 42 True or False The remaining natural ecosystems are ones for which we have no use. True 43 True or False The base Uracil is found in DNA. False 44 True or False Herbivores normally live long lives. False 45 True or False Stage 1 of respiration takes place in the cytoplasm. True 46 True or False Lipids are made of amino acids. False 47 True or False Mitosis divides a nucleus into two identical nuclei. True 48 True or False Some energy released in respiration is lost as heat. True 49 True or False Osmosis is responsible for uptake of minerals. False 50 True or False The products of vegetative propagation are clones. True 51 True or False Urea is formed in the kidneys. False 52 True or False Cell membranes are semipermeable. True 53 True or False Animal cells do not have membranes. False 54 True or False Enzymes are not essential for metabolism. False 55 True or False Phloem transports water in plants. False 56 True or False A potato is a modified stem. True 57 True or False A motor neuron carries impulses to the brain. False 58 True or False Glucose is a monosaccharide. True 59 True or False Lenticels serve the same function as stomata. True 60 True or False Mitosis always produces four new cells. False 61 True or False Nitrogen is a trace element. False 62 True or False Plant cells have chloroplasts. True 63 True or False Tendons attach bone to bone. False 64 True or False Endosperm is a food reserve in some seeds. True 65 True or False Intraspecies competition is more intense than interspecies competition. True 66 True or False The liver produces bile. True 67 True or False Metabolism is the sum of all the chemical reactions in the body. True 68 True or False Anabolism is the breaking down of large molecules. False 69 True or False Nutrition is the way living organisms get rid of waste. False 70 True or False The term abiotic refers to the living factors in an ecosystem. True 71 True or False In science, a hypothesis is an educated guess based on observations. True 72 True or False In experiments the factor that is changed is called the variable. True 73 True or False Grazing food chains begin with animals. False 74 True or False Alleles are different forms of the same gene. True 75 True or False Chromosomes are made up of DNA and protein. True 76 True or False A human sperm cell contains 23 chromosomes. True 77 True or False Phenotype is the genetic make-up of an organism. False 78 True or False Replication is the copying of DNA. True 79 True or False RNA contains the base thymine. False 80 True or False Genetic engineering is the manipulation and alteration of genes. True 81 True or False The copying of the DNA code into mRNA is called transcription. True 82 True or False Single-celled organisms use meiosis for asexual reproduction. False 83 True or False In telophase of mitosis, a cleavage furrow forms in plant cells. True 84 True or False When a cell is not dividing it is said to be in prophase. False 85 True or False The nuclear membrane disappears in the early part of mitosis. True 86 True or False Centromeres give rise to the nuclear spindle. True 87 True or False Mitosis is a source of variation. False 88 True or False In multicellular organisms mitosis is primarily used for growth. True 89