Respiration in Plants: Understanding the Key Pathways and Functions
Introduction Respiration in plants is an essential biochemical process that provides the energy necessary for growth, reproduction, and maintenance. It is a process by which plants convert stored food into usable energy, much like respiration in animals, although plants have a unique set of mechanisms to manage this conversion. While photosynthesis is the process by which plants capture solar energy...
Questions with Answers on “Respiration in Plants: Key Pathways and Functions”
1. Explain the process of glycolysis and its role in plant respiration. Answer:Glycolysis is the first step in cellular respiration, occurring in the cytoplasm of plant cells. It involves the breakdown of one glucose molecule into two molecules of pyruvate. This process is anaerobic and does not require oxygen. The key stages include: Glucose Activation: Glucose is phosphorylated to form fructose-1,6-bisphosphate...
MCQs with Answers on “Respiration in Plants: Key Pathways and Functions”
Which of the following is the primary site for respiration in plants? A. Chloroplast B. Mitochondria C. Ribosome D. Endoplasmic reticulumAnswer: B. Mitochondria What is the main purpose of respiration in plants? A. Storage of energy B. Release of energy C. Absorption of nutrients D. Synthesis of proteinsAnswer: B. Release of energy Which process in plant respiration produces ATP? A. Glycolysis B. Calvin Cycle C. Transcription D. PhotosynthesisAnswer: A. Glycolysis In aerobic respiration, the...
Photosynthesis: Illuminating the Process of Light and Dark Reactions
Introduction Photosynthesis is a vital biochemical process that sustains life on Earth. Through this process, green plants, algae, and certain bacteria convert light energy into chemical energy stored in glucose. It provides oxygen for respiration and serves as the foundation of most food chains. Understanding photosynthesis involves delving into its two main stages: the light-dependent reactions and the Calvin cycle,...
Questions with Answers on Photosynthesis: Light and Dark Reactions Explained
Question 1 What is photosynthesis, and why is it essential for life on Earth?Answer:Photosynthesis is a biochemical process by which green plants, algae, and some bacteria convert light energy into chemical energy stored in glucose. The overall equation is:6CO2+6H2O+light energy→C6H12O6+6O26CO_2 + 6H_2O + light , energy rightarrow C_6H_{12}O_6 + 6O_26CO2+6H2O+lightenergy→C6H12O6+6O2It is essential because it: Produces oxygen necessary for respiration. Forms the base of...
MCQs on “Photosynthesis: Light and Dark Reactions Explained”
What is the primary pigment involved in photosynthesis?a) Chlorophyllb) Carotenoidsc) Xanthophylld) AnthocyaninAnswer: a) Chlorophyll Where do light reactions of photosynthesis occur?a) Mitochondriab) Stromac) Thylakoid membraned) CytoplasmAnswer: c) Thylakoid membrane The splitting of water during the light reaction is called:a) Photophosphorylationb) Photolysisc) Hydrolysisd) OxidationAnswer: b) Photolysis Which molecule is the final electron acceptor in the light reactions?a) NADP⁺b) ATPc) ADPd) OxygenAnswer: a) NADP⁺ What...
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Homeostasis: The Regulation of the Internal Environment
Introduction Homeostasis is the process by which living organisms maintain a stable internal environment despite changes in the external environment. It is a fundamental concept in biology that ensures the proper functioning of organisms by regulating various physiological parameters, such as body temperature, blood sugar levels, water balance, and blood pressure. The ability of organisms to maintain homeostasis is crucial...
Questions with answers on Homeostasis: The Regulation of Internal Environment
1. What is homeostasis, and why is it important for the survival of an organism? Answer:Homeostasis refers to the process by which an organism maintains a stable internal environment despite changes in the external environment. This regulation is essential for the proper functioning of cells, tissues, and organs. It involves the control of various parameters like temperature, pH, water balance,...
MCQs with answers on Homeostasis: The Regulation of Internal Environment
1. What is homeostasis? A) The process of maintaining a stable internal environmentB) The breakdown of food in the bodyC) The movement of gases in and out of the lungsD) The synthesis of proteins in the bodyAnswer: A) The process of maintaining a stable internal environment 2. Which of the following is NOT involved in maintaining homeostasis? A) Hormonal regulationB) Thermal regulationC)...
