Ordinary level biology Revise Good 🤞 luck p1 @all

Here are the answers to the questions from the image: 1. An organism which stores food in the pyrenoid. Pyrenoids are structures found within the chloroplasts of certain algae, including Spirogyra, where they are involved in carbon dioxide fixation and starch synthesis and storage. The correct option is C. C 2. Where does deamination occur in the body? Deamination, the process of removing an amino group from an amino acid, primarily occurs in the liver. This is a crucial step in the breakdown of excess proteins. The correct option is A. A 3. What is the effect of untreated sewage in water? Untreated sewage introduces large amounts of organic matter and nutrients into water bodies. This leads to an increase in bacterial decomposition, which consumes dissolved oxygen, and can cause eutrophication, an excessive growth of algae and aquatic plants, further depleting oxygen and harming aquatic life. The correct option is D. D 4. Where in the nephron is glucose reabsorbed? In the nephron, the majority of glucose, amino acids, and essential ions are reabsorbed from the filtrate back into the blood in the proximal convoluted tubule. The correct option is D. D 5. In the water cycle which process causes water molecules to return to the atmosphere? Evaporation is the process by which liquid water changes into water vapor and rises into the atmosphere. Transpiration from plants also contributes to this. The correct option is C. C 6. Which of these prevents contraction of the uterine wall during pregnancy? Progesterone is a hormone that maintains the uterine lining and, importantly, inhibits the contraction of the uterine muscles, thus preventing premature labor during pregnancy. The correct option is A. A 7. The following organisms make up a food chain: snake, man, frog, locust, groundnut plant. Which of these is a primary consumer? In this food chain, the groundnut plant is the producer. A primary consumer feeds on producers. Locusts are herbivores that feed on plants. The correct option is C. C 8. Which blood vessel carries deoxygenated blood from the heart to the lungs? The pulmonary artery is unique among arteries as it carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation. The correct option is D. D 9. Below is the diagram of an animal cell. Which numbered structure controls all the activities of the cell? In an animal cell, the nucleus (labeled as 3) contains the genetic material (DNA) and controls all the metabolic activities and functions of the cell. The correct option is B. B 10. Which of the following parts of a flower make up the stamen? The stamen is the male reproductive organ of a flower, consisting of two main parts: the filament (a stalk) and the anther (which produces pollen). The correct option is A. A Send me the next one 📸