LABORATORY REVIEW
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a cell releasing a molecule through the cell membrane without energy
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a cell acquiring oxygen from the environment
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a cell using energy to transport a large food molecule through a protein
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a cell releasing water to the environment
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Detailed explanation-1: -To maintain homeostasis, every cell must constantly monitor its energy level and appropriately adjust energy, in the form of ATP, production rates based on metabolic demand. Continuous fulfillment of this energy demand depends on the ability of cells to sense, metabolize, and convert nutrients into chemical energy.
Detailed explanation-2: -Metabolism refers to all the chemical processes going on continuously inside your body that allow life and normal functioning (maintaining normal functioning in the body is called homeostasis). These processes include those that break down nutrients from our food, and those that build and repair our body.
Detailed explanation-3: -Cells use active transport to maintain homeostasis by pumping materials into or out of the cell to maintain a balance. For example, cells in the intestine actively pump glucose out of the lumen and into the blood. This helps keep the body fueled with glucose and maintains blood glucose levels.
Detailed explanation-4: -ATP is consumed for energy in processes including ion transport, muscle contraction, nerve impulse propagation, substrate phosphorylation, and chemical synthesis.