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Questions in biology

[Terjawab] Which is biotic? A. wind B. iron gate C. sunlight D. leaf

[Terjawab] 14. Omega-3 fatty acids are abundant in: (a) Red meat (b) Dairy products (c) Fish and flaxseeds (d) Refined grains 15. What is the primary role of dietary fiber? (a) Provide quick energy (b) Aid digestion and prevent constipation (c) Build muscle tissue (d) Store vitamins 16. Calcium is crucial for: (a) Blood clotting (b) Healthy bones and teeth (c) Energy metabolism (d) Antioxidant defense 17. Which vitamin is synthesized by gut bacteria? (a) Vitamin A (b) Vitamin D (c) Vitamin K (d) Vitamin B12 18. Kwashiorkor results from deficiency in: (a) Carbohydrates (b) Proteins (c) Fats (d) Vitamins 19. Water-soluble vitamins include: (a) Vitamins A and D (b) Vitamins B and C (c) Vitamins E and K (d) Vitamins D and K 20. The glycemic index measures: (a) Fat content in food (b) Protein quality (c) Blood sugar response to carbohydrates (d) Vitamin absorption rate 21. Diversified farming refers to: (a) Monoculture (b) Single-crop dependence (c) Growing multiple crops/livestock (d) Industrial agriculture 22. Crop rotation enhances: (a) Soil depletion (b) Pest resistance (c) Soil fertility and reduces pests (d) Water usage 23. Agroforestry integrates: (a) Only crops (b) Trees, crops, and livestock (c) Only livestock (d) Aquaculture 24. A benefit of diversified diets is: (a) Higher risk of deficiencies (b) Reduced nutrient intake (c) Lower chronic disease risk (d) Increased food monotony 25. Legumes in crop systems improve soil by: (a) Depleting nitrogen (b) Fixing atmospheric nitrogen (c) Increasing salinity (d) Promoting erosion 26. Permaculture emphasizes: (a) Short-term yields (b) Mimicking natural ecosystems (c) Chemical inputs (d) Monocultures

[Terjawab] In a 2022 study, Nicolás M. Morato and colleagues attempted to resolve a long-standing paradox: although water is critical to most reactions that enable life, during the earliest stages of Earth's history—when most of the planet's surface was covered by oceans—the presence of water likely ______ the formation of proteins and other biomolecules that are found in all living organisms. Which choice completes the text with the most logical word or phrase? A. exploited B. imitated C. hampered D. reflected

[Terjawab] Do not adapt as a result of competition for resources.

[Terjawab] Which best describes an acquired trait? A. An acquired trait is encoded in the DNA. B. An acquired trait is passed from parent to offspring. C. An acquired trait is not affected by one's peers. D. An acquired trait is developed during one's lifetime.

[Terjawab] Do you agree that your actions have an impact on the environment? Why? Have you ever realized that your actions today may have lasting impacts on the environment? In what way will these affect the Earth?

[Terjawab] A farmer reports stunted, spindle-shaped potato plants. Lab analysis reveals circular RNA molecules without protein coats. What is the causative agent? A) Bacteria B) Virus C) Mycoplasma D) Viroid

[Terjawab] 92. If a given enzyme works only at temperature range of 20 and 45 °C and the potential of hydrogen ions that ranges from 4 to 9. Which one of the following works best during the optimization of these two factors for the enzyme activity? A. The optimum pH under which this enzyme is most active is found below 4. B. Adjusting the temperature between 20°C and 45°C results little denaturation and increased number of collisions. C. Adjusting the pH above 9 can increase the probability of collisions between the enzyme and the substrate. D. Adjusting the temperature below 20°C makes the enzyme more active, hence the temperature at this value is optimal. 93. All of the following features define a chromosome EXCEPT A. functional unit of inheritance. B. made up of DNA and protein. C. exists in pairs in diploid organisms. D. contains hundreds to thousands of genes. 94. Which structural and functional difference is observed between DNA and RNA? A. DNA is very stable molecule while RNA is degraded quickly. B. RNA stores the genetic material while DNA involves in protein synthesis. C. RNA produces DNA through the process of transcription. D. Both DNA and RNA have the same nitrogenous bases but differ in pentose sugar. 95. All of the following events occur during telophase I of meiosis I cell division EXCEPT A. nuclear envelope reforms. B. set of chromosomes come together. C. each of the spindle fibers disappears. D. crossing over takes place.

[Terjawab] Which of the following is a statement about weather? A. The weather in Seattle tends to be rainy. B. The tropical rain forest has high annual precipitation. C. The forecast says the temperature will be 80°F tomorrow. D. The sky is overcast with clouds on average 200 days per year.

[Terjawab] Which of the following best explains why the diversity of organisms decreases as you move from shallow seas to deep oceans? A. The levels of oxygen in the deep ocean are too high for many organisms to thrive. B. The low temperatures of the deep ocean would freeze most organisms. C. The salinity of the deep ocean is too high for most organisms to live. D. The lack of sunlight in the deep ocean limits the types of organisms that can survive.