Welcome to your OCR A2 Biology 1 1. Where does glycolysis take place? Nucleolus of a cell Golgibodies of a cell Ribosome of a cell Cytoplasm of a cell2. The chemical energy store in plant biomass within a given area or volume. Gross Primary Production (GPP) Gross Production Net Primary Production (NPP) Plant Primary Production3. Select the incorrect statements out of the following. a) Plants store glucose as starch and animals store it as glycogen. b) During excercise the muscle cells respire more than they do at rest. c) Respiration and breathing are the same thing. d) The muscles store glucose as fatty acids. a, b & c a, c & d b, c & d c & d only4. The most common enzyme in the world. Cellulase Aminoacyl tRNA synthetase Ribulose bisphosphate carboxylase (rubisco) Glucuronidase5. Select the correct statement out of the following. Every ecosystem is very complex. A niche describes how an organism finds food. Open ocean is a small ecosystem. No ecosystem is entirely self-contained.6. Clutch size in birds is an example of ___________. Stabilising selection Disruptive selection Sexual selection Directional selection7. Which is not a condition for Hardy-Weinburg equilibrium? No mutations Population must be very large. Natural selection Random mating8. Biomass can be measured in terms of ______________ or ____________ per given area. Dry mass of tissue, volume of oxygen Mass of hydrogen, dry mass of tissue Mass of carbon, dry mass of tissue Volume of oxygen, mass of oxygen9. An example of how farmers can increase the rate of crop growth in greenhouses in relation to photosynthesis. Using paraffin lamps inside greenhouses. Using high doses of plant hormones. Using biocompost. Supplying carbon dioxide to the plants in excessive amounts.10. Industrial melanism is an example of ___________. Directional selection Sexual selection Disruptive selection Stabilising selection11. A situation where Hardy-Weinburg calculations does not apply. No immigration or emigration No natural selection Population must be very large. Non random mating12. A few students used the mark-release-capture technique in order to find out the estimated number of wild boars in an area near the forest. The following data was collected. Number caught and marked in first sample=63. Number caught in second sample=82. Number in the second sample that had been marked=16. What is the estimated number in the population? 320 344 350 44413. Which of the following is also known as the citric acid cycle? Glycolysis Oxidative phosphorylation The Krebs cycle Link reaction14. What happens if respiration is aerobic? Pyruvate can be converted to lactate using reduced NAD. Pyruvate from glycolysis enters the mitochondrial matrix by active transport. Pyruvate from glycolysis enters the ribosome by active transport. Pyruvate can be converted to ethanol using reduced NAD.15. What is the waste product in anaerobic respiration? Carbon dioxide Water Lactic acid Carbon dioxide and water16. Which indicates the summary of aerobic respiration? Glucose+carbon dioxide---->oxygen+water Glucose+oxygen---->carbon dioxide+water+(+energy) Glucose+oxygen---->carbon dioxide+(+energy) Glucose+carbon dioxide---->oxygen+water+(+energy)17. Select the incorrect statement about the Krebs cycle. Oxaloacetate is regenerated to combine with another acetyl coenzyme A. Acetyl coenzyme A combines with oxaloacetate to form citrate. Carbon dioxide is generated as a waste. It is an open pathway of enzyme controlled reactions.18. Select the incorrect sentence about respiration. Respiration is a process in which organic molecules act as a fuel. Glucose breakdown can be divided into 3 stages. Many cells can use only glucose as their respiratory substrate. Glycolysis is the first stage of anaerobic and aerobic respiration.19. A factor which is not necessary for the process of photosynthesis. Light energy Water Carbon dioxide Wind20. Which is not a limiting factor of photosynthesis? Speed of wind Light intensity Temperature Carbon dioxide concentration21. Select the correct statement regarding photosynthesis. A graph of the rate of photosynthesis at different concentrations of carbon dioxide and the shape as that for different light intensities are different. A plant can still photosynthesize if there is plenty of light but insufficient carbon dioxide. If it gets too cold, the rate of photosynthesis will increase. Increasing the light intensity will boost the speed of photosynthesis.Time is Up!