Q: Q: What kind of enzyme is phosphofructokinase? Read this paragraph and choose the correct option from the provided answers: Choices: - covalent - intracellular - orthosteric - allosteric A:
A: allosteric

Q: Q: Which procedure helps modern nuclear physics convert lead into gold? Read this paragraph and choose the correct option from the provided answers: The alchemists were never successful in changing lead into gold. But modern nuclear physics can accomplish this task. Lead is subjected to nuclear bombardment in a particle accelerator. A small amount of gold can be obtained by this process. However, the cost of the procedure is far more than the amount of gold obtained. So the dream of the alchemists has never (and will never) come true. Choices: - nuclear fission - matter fusion - evaporation - nuclear bombardment A:
A: nuclear bombardment

Q: Q: What disease is described as a respiratory disorder characterized by wheezing, coughing, and a feeling of constriction in the chest? Read this paragraph and choose the correct option from the provided answers: Respiratory system disorders are directly related to air pollution. These disorders have severe effects on human health, some leading to death directly related to air pollution. Air pollution related respiratory disorders include asthma, bronchitis, and emphysema. Asthma is a respiratory disorder characterized by wheezing, coughing, and a feeling of constriction in the chest. Bronchitis is inflammation of the membrane lining of the bronchial tubes of the lungs. Emphysema is a deadly lung disease characterized by abnormal enlargement of air spaces in the lungs and destruction of the lung tissue. Additional lung and heart diseases are also related to air pollution, as are respiratory allergies. Choices: - indigestion - dementia - inflammation - asthma A:
A: asthma

Q: Q: What intensifies the response during homeostasis? Read this paragraph and choose the correct option from the provided answers: 1.5 Homeostasis Homeostasis is the activity of cells throughout the body to maintain the physiological state within a narrow range that is compatible with life. Homeostasis is regulated by negative feedback loops and, much less frequently, by positive feedback loops. Both have the same components of a stimulus, sensor, control center, and effector; however, negative feedback loops work to prevent an excessive response to the stimulus, whereas positive feedback loops intensify the response until an end point is reached. Choices: - pressure loops - pure loops - negative feedback loops - positive feedback loops A:
A: positive feedback loops