Ques: Q: Light energy is absorbed by which kind of molecule? Read this paragraph and choose the correct option from the provided answers: Figure 5.12 Light energy is absorbed by a chlorophyll molecule and is passed along a pathway to other chlorophyll molecules. The energy culminates in a molecule of chlorophyll found in the reaction center. The energy "excites" one of its electrons enough to leave the molecule and be transferred to a nearby primary electron acceptor. A molecule of water splits to release an electron, which is needed to replace the one donated. Oxygen and hydrogen ions are also formed from the splitting of water. Choices: - inorganic - parasite - nutrient - chlorophyll A:
Ans: chlorophyll

Ques: Q: Thomson's plum pudding model shows the structure of what? Read this paragraph and choose the correct option from the provided answers: Following the discovery of the electron, J. J. Thomson developed what became known as the " plum pudding " model in 1904. Plum pudding is an English dessert similar to a blueberry muffin. In Thomson's plum pudding model of the atom, the electrons were embedded in a uniform sphere of positive charge like blueberries stuck into a muffin. The positive matter was thought to be jelly- like or a thick soup. The electrons were somewhat mobile. As they got closer to the outer portion of the atom, the positive charge in the region was greater than the neighboring negative charges and the electron would be pulled back more toward the center region of the atom. Choices: - nucleus - cell - DNA - atom A:
Ans: atom

Ques: Q: The rate that energy is released is known as Read this paragraph and choose the correct option from the provided answers: Power is the rate that energy is released. The units for power are watts (W), which equal joules per second . For example, a 60 W light bulb transforms 60 joules of electrical energy into light and heat energy every second. Choices: - flow - heat - pressure - power A:
Ans: power

Ques: Q: What can be described as a tiny male gametophyte enclosed in a tough capsule? Read this paragraph and choose the correct option from the provided answers: A grain of pollen is a tiny male gametophyte enclosed in a tough capsule (see Figure below ). It carries sperm to an ovule while preventing it from drying out. Pollen grains can't swim, but they are very light, so the wind can carry them. Therefore, they can travel through air instead of water. Choices: - seed - cell - dna - grain of pollen A:
Ans:
grain of pollen