Answer the following question given this paragraph: Under the direction of osteocytes, osteoblasts continuously build up bone, while osteoclasts continuously break down bone to maintain mineral homeostasis. Bone tissues include compact bone, spongy bone, bone marrow, and periosteum. Q: Osteoclasts break down bone to maintain mineral what? Choices: - density - fluctuations - polarity - homeostatis A:
homeostatis
Answer the following question given this paragraph: The lungs release carbon dioxide into the air. Carbon dioxide is a gaseous waste product of the cells. Wastes are excreted from the body by the excretory system. Therefore, the lungs are organs of the excretory system as well as the respiratory system. Q: Are the lungs organs of the excretory system, the respiratory system, or both? Choices: - excretory - respiratory - neither - both A:
both
Q: Answer the following question given this paragraph: We are lucky to have an atmosphere on Earth. The atmosphere supports life, and is also needed for the water cycle and weather. The gases of the atmosphere even allow us to hear. Q: What supports life, and is also needed for the water cycle and weather? Choices: - fossil fuels - oxygen - greenhouse gas - atmosphere A:
A: atmosphere
Question: Answer the following question given this paragraph: A day or two after an ovary releases an egg, the egg may unite with a sperm. Sperm are deposited in the vagina during sexual intercourse. They propel themselves through the uterus and enter a fallopian tube . This is where fertilization usually takes place. Q: Where does fertilization usually take place? Choices: - uterus - ovary - vagina - fallopian tubes A:
Answer: fallopian tubes
*Question*
Answer the following question given this paragraph: The convection zone is where convection takes place. It is located outward from the radiative zone. Q: What zone is outside the radiative zone? Choices: - diffusion zone - activation zone - peripheral zone - convection zone A:
**Answer**
convection zone
(Question)
Answer the following question given this paragraph: Flowers Flowers are modified leaves or sporophylls organized around a central stalk. Although they vary greatly in appearance, all flowers contain the same structures: sepals, petals, pistils, and stamens. A whorl of sepals (the calyx) is located at the base of the peduncle, or stem, and encloses the floral bud before it opens. Sepals are usually photosynthetic organs, although there are some exceptions. For example, the corolla in lilies and tulips consists of three sepals and three petals that look virtually identicalthis led botanists to coin the word tepal. Petals (collectively the corolla) are located inside the whorl of sepals and usually display vivid colors to attract pollinators. Flowers pollinated by wind are usually small and dull. The sexual organs are located at the center of the flower. As illustrated in Figure 14.25, the stigma, style, and ovary constitute the female organ, the carpel or pistil, which is also referred to as the gynoecium. A gynoecium may contain one or more carpels within a single flower. The megaspores and the female gametophytes are produced and protected by the thick tissues of the carpel. A long, thin structure called a style leads from the sticky stigma, where pollen is deposited, to the ovary enclosed in the carpel. The ovary houses one or more ovules that will each develop into a seed upon fertilization. The male reproductive organs, the androecium or stamens, surround the central carpel. Stamens are composed of a thin stalk called a filament and a sac-like structure, the anther, in which microspores are produced by meiosis and develop into pollen grains. The filament supports the anther. Q: Sepals, petals, pistils, and stamens are contained in all what, which are actually modified leaves or sporophylls organized around a central stalk? Choices: - chlorophyll - roots - stems - flowers A:
(Answer)
flowers