Question : The first step in the process of nutrition is the breakdown of glucose into a three-carbon molecule called ______.
Option 1: pyruvate
Option 2: propanol
Option 3: propane
Option 4: methanol
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Correct Answer: pyruvate
Solution : The correct option is pyruvate.
Glycolysis is the process of breaking glucose molecules to generate energy. In this process, the glucose is broken down to create pyruvate in a cell's cytoplasm. The breakdown of one glucose molecule into two pyruvate molecules results in the production of additional energy in one of two ways. In the presence of oxygen (aerobic respiration), pyruvic acid provides energy to living cells through the citric acid cycle, also referred to as the Krebs cycle. In the absence of oxygen, it ferments to form lactic acid.
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Question : Breakdown of pyruvate into lactic acid and energy in lack of oxygen takes place in which of the following?
Option 1: Bacteria
Option 2: Human muscle cells
Option 3: Yeast
Option 4: Mitochondria
Question : LPG is a mixture of______.
Option 1: Methane and Butane
Option 2: Butane and Propane
Option 3: Methane and Propane
Option 4: Ethane and Propane
Question : What is dehydration?
Option 1: Removal of acid from a molecule
Option 2: Removal of the base from a molecule
Option 3: Removal of water from a molecule
Option 4: Removal of alkali from a molecule
Question : Directions: Which one of the following responses would be a meaningful order of the following in ascending order? 1. Atom 2. Matter 3. Molecule 4. Electron
Option 1: 4, 1, 3, 2
Option 2: 3, 1, 4, 2
Option 3: 3, 4, 1, 2
Option 4: 1, 2, 3, 4
Question : The first organic compounds synthesised in the laboratory was
Option 1: Urea
Option 2: Uric acid
Option 3: Lactic acid
Option 4: Glucose
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