Ques: Q: What kind of energy does pyruvate have a lot of? Read this paragraph and choose the correct option from the provided answers: Pyruvate still contains a great deal of chemical energy. In fact, two pyruvate molecules contain most of the chemical energy from the original glucose molecule. If oxygen is present, pyruvate enters the mitochondria for complete breakdown by the Krebs Cycle and electron transport chain. If oxygen is not present, cells must transform pyruvate to regenerate NAD + in order to continue making ATP. Keep in mind that glycolysis produces a net total of 2 ATP. Choices: - thermal - nuclear - gravitational - chemical A:
Ans: chemical

Ques: Q: Radiotherapy is effective against cancer because cancer cells reproduce rapidly and, consequently, are more sensitive to this? Read this paragraph and choose the correct option from the provided answers: Radiotherapy is effective against cancer because cancer cells reproduce rapidly and, consequently, are more sensitive to radiation. The central problem in radiotherapy is to make the dose for cancer cells as high as possible while limiting the dose for normal cells. The ratio of abnormal cells killed to normal cells killed is called the therapeutic ratio, and all radiotherapy techniques are designed to enhance this ratio. Radiation can be concentrated in cancerous tissue by a number of techniques. One of the most prevalent techniques for well-defined tumors is a geometric technique shown in Figure 32.13. A narrow beam of radiation is passed through the patient from a variety of directions with a common crossing point in the tumor. This concentrates the dose in the tumor while spreading it out over a large volume of normal tissue. The external radiation can be x-rays, 60 Co rays, or ionizing-particle beams produced by accelerators. Accelerator-produced beams of neutrons, -mesons , and heavy ions such as nitrogen nuclei have been employed, and these can be quite effective. These particles have larger QFs or RBEs and sometimes can be better localized, producing a greater therapeutic ratio. But accelerator radiotherapy is much more expensive and less frequently employed than other forms. Choices: - UV light - separation - destruction - radiation A:
Ans: radiation

Ques: Q: What is the part of the flower that produces pollen? Read this paragraph and choose the correct option from the provided answers: stamens The part of the flower that produces pollen. Choices: - cones - stigma - leaves - stamen A:
Ans: stamen

Ques: Q: What kind of energy is released when the nucleus of an atom is split? Read this paragraph and choose the correct option from the provided answers: Nuclear energy is released when the nucleus of an atom is split. Choices: - microwave - kinetic - atomic - nuclear A:
Ans:
nuclear