Back to Questions
Want to know:
The cells of beetroot contain a red pigment. A student investigated the effect of temperature onthe loss of red pigment from beetroot. He put discs cut from beetroot into tubes containing water.He maintained each tube at a different temperature. After 25 minutes, he measured thepercentage of light passing through the water in each tubeThe student put the same volume of water in each tube.Explain why it was important that he controlled this experimental variable [2 marks]
Get a detailed, AI-powered explanation for this question and thousands more on StudyFetch.
Get the Answer for FreeHow StudyFetch Helps You Master This Topic
AI-Powered Answers
Get instant, detailed explanations powered by AI that understands your course material.
Deep Understanding
Go beyond surface-level answers with step-by-step breakdowns and examples.
Personalized Learning
Spark.E adapts to your learning style and helps you connect ideas.
Practice & Test
Turn any question into flashcards, quizzes, and practice tests to solidify your knowledge.
Explore More Questions
- law enforcement officials sometimes controversially rely on the practice of ________ ________, the assumption that certain groups of people are more likely to commit particular crimes
- Which of the following best describes the greenhouse effect on Earth?A.) Greenhouse gases trap heat near Earth's surface, keeping the average surface temperature constant.B.) Greenhouse gases create a relatively warm inversion layer, which traps pollutants near Earth's surface.C.) Greenhouse gases filter out UV-BUV-B and UV-CUV-C radiation, shielding living things from harmful solar radiation.D.) Greenhouse gases are emitted from human activities such as the combustion of fossil fuels and agricultural practices.
- SE O DELITO FOR CULPOSO PROIBIÇÃO DE PARTICIPAR DE LICITAÇÕES PELO PRAZO DE