QA Reviewer Integrated Science 9 SY 2024 - 2025 PDF

St. Agnes Academy, Inc. Junior High School Legazpi City REVIEWER FOR FIRST QUARTERLY ASSESSMENT in INTEGRATED SCIENCE 9 SY 2024 – 2025 Directions: Read each question carefully and...

St. Agnes Academy, Inc. Junior High School Legazpi City REVIEWER FOR FIRST QUARTERLY ASSESSMENT in INTEGRATED SCIENCE 9 SY 2024 – 2025 Directions: Read each question carefully and select the letter corresponding to the BEST answer. Write your answer in CAPITAL LETTERS only. (15 points) 1. Which of the following is the primary function of the heart in the circulatory system? 1. A. To break down nutrients B. To transport oxygen and nutrients to the body C. To filter waste from the blood D. To absorb oxygen from the lungs 2. 2. Which statement best explains the role of the arteries in the circulatory system? A. Arteries transport oxygen-poor blood to the lungs. B. Arteries carry oxygen-rich blood from the heart to the rest of the body. C. Arteries remove carbon dioxide from the blood. D. Arteries help filter blood before it reaches the heart. 3. How does regular exercise benefit the circulatory system? 3. A. It decreases blood flow B. It increases heart rate C. It strengthens the heart and improves circulation D. It reduces oxygen levels in the blood 4. In which part of the heart does oxygen-poor blood enter from the body? 4. A. Left ventricle C. Left atrium B. Right ventricle D. Right atrium 5. The diaphragm plays a crucial role in breathing. What is its function during inhalation? 5. A. It relaxes and allows air to be expelled from the lungs B. It contracts and moves downward to create negative pressure C. It closes to prevent food from entering the respiratory tract D. It produces surfactant to reduce surface tension in the alveoli 6. What is the primary function of the alveoli in the respiratory system? 6. A. To filter dust and particles from the air B. To exchange oxygen and carbon dioxide with the blood C. To produce mucus for trapping pathogens D. To warm and humidify the air 7. How does regular exercise benefit the circulatory system? 7. _________ A. It decreases blood flow B. It increases heart rate C. It strengthens the heart and improves circulation D. It reduces oxygen levels in the blood 8. Which of the following is a disease of the respiratory system? 8. _________ A. Atherosclerosis C. Anemia B. Asthma D. Stroke 9. What is the primary function of the trachea in the respiratory system? 9. _________ A. To filter air B. To exchange gases C. To transport air to the lungs D. To produce sound 10. What happens during a stroke? 10. A. Blood flow to the heart increases B. Blood flow to the brain is interrupted C. The lungs fill with fluid D. The heart beats too slowly 11. How can you prevent respiratory infections? 11. A. By reducing salt intake B. By staying hydrated C. By practicing good hygiene and washing hands D. By increasing red blood cell count 12. What does codominance mean in genetics? 12. A. One gene hides the other. B. Both genes show up clearly. C. The traits blend together. D. More than two genes control a trait. 13. 13. Which example shows incomplete dominance? A. A black rabbit and a white rabbit produce a gray rabbit. B. A red flower and a white flower both show up in the offspring. C. A person has blood type AB when both types are present. D. A bird has both blue and yellow feathers. 14. If a flower with red petals (RR) is crossed with a flower with white petals (WW). 14. What will be the resulting offsprings? Identify the phenotypic and genotypic ratios of the offsprings? A. Phenotypic ratio: 4 pink; Genotypic ratio: 4 RW B. Phenotypic ratio: 4 pink; Genotypic ratio: 4 RR C. Phenotypic ratio: 2 pink, 2 red; Genotypic ratio: 2 RW, 2 RR D. Phenotypic ratio: 2 pink, 2 white; Genotypic ratio: 2 RW, 2 WW 15. What does incomplete dominance mean in genetics? 15. A. One trait completely hides the other. B. The traits blend together. C. Both traits show up equally. D. Only one trait is visible. ANSWER KEY: 1. B 6. B 11. C 2. B 7. C 12. B 3. C 8. B 13. A 4. D 9. C 14. A 5. B 10. B 15. B  KEY POINTS FOR REVIEW: INTEGRATED SCIENCE 9 CIRCULATORY SYSTEM: Transports oxygen, nutrients, and hormones to cells while removing carbon dioxide and waste. 1. Main Parts: Heart, blood vessels (arteries, veins, capillaries), blood. 2. Functions: o Heart: Pumps blood to supply oxygen and nutrients to the body. o Arteries: Carry oxygen-rich blood from the heart to the body. o Veins: Carry oxygen-poor blood back to the heart. o Capillaries: Facilitate the exchange of gases (oxygen and carbon dioxide) between the blood and surrounding tissues. 3. Pulmonary Circulation: Transports blood between the heart and lungs. 4. Systemic Circulation: Transports oxygenated blood from the heart to the rest of the body. RESPIRATORY SYSTEM: Facilitates gas exchange by bringing in oxygen and expelling carbon dioxide. 1. Main Parts: Nose, trachea, bronchi, lungs, alveoli, diaphragm. 2. Functions: o Nose: Filters and warms the air. o Lungs: Main organ for gas exchange. o Alveoli: Tiny air sacs where oxygen is absorbed into the blood and carbon dioxide is released. o Diaphragm: Muscle that aids in breathing. DISEASES AFFECTING THE CIRCULATORY AND RESPIRATORY SYSTEMS: 1. Hypertension (High Blood Pressure): Increased pressure in the blood vessels, often leading to heart disease. 2. Atherosclerosis: Buildup of plaque in arteries, reducing blood flow. 3. Asthma: Chronic inflammation of the airways, causing difficulty breathing. 4. Emphysema: Damage to the alveoli in the lungs, leading to shortness of breath. 5. Stroke: The blood supply to a part of the brain is interrupted or reduced. PREVENTION STRATEGIES: 1. For Circulatory Diseases: o Maintain a healthy diet and exercise regularly. o Avoid smoking and manage stress. o Regular blood pressure checks. 2. For Respiratory Diseases: o Avoid exposure to air pollution and smoking. o Use protective gear in environments with dust and harmful particles. o Practice good hygiene to prevent respiratory infections. NON-MENDELIAN PATTERNS OF INHERITANCE: 1. Codominance: Both alleles are fully expressed in the phenotype (e.g., red and white cow producing roan cow—mixture of red and white). 2. Incomplete Dominance: The phenotype is a blend of both alleles (e.g., red and white flowers producing pink flowers). 3. Problem Solving for Non-Mendelian Patterns of Inheritance: Problem: In plants known as “four o’clock”, the allele for dominant yellow flower is incompletely dominant over the allele for red flowers. A gardener allows several heterozygous orange-flowered four o’clock to self-pollinate. Draw a Punnett square for the cross. Identify the gametes, phenotypic, and genotypic ratio. a. Cross between a yellow flower (YY) and a red flower (RR) RR x YY Phenotype: pink flowers R R Phenotypic ratio: 4:4 pink flowers Y YR YR Genotype: YR Y YR YR Genotypic ratio: 4:4 YR b. Cross between two orange (YR) (heterozygous) flowers YR x YR Phenotype: yellow, orange, and red flowers Y R Phenotypic ratio: 1:2:1 yellow, orange, and red flowers Y YY YR Genotype: YY, YR, RR R YR RR Genotypic ratio: 1:2:1 YY, YR, RR IMPORTANT NOTES: I. Type of Test for QA in Integrated Science 9: 30 – items multiple choice 20 – points performance-based assessment II. Topics Covered of the QA in Integrated Science 9: Circulatory System Respiratory System Diseases Affecting Both Systems and Its Prevention Strategies Non-Mendelian Patterns of Inheritance III. What to Bring for The QA in Integrated Science 9: Ballpen/s Extra sheet of paper Coloring materials