input: OPTIONS:
- oxygen
- hydrogen
- nitrogen
- carbon Now, answer this question: Answer the following question given this paragraph: Carbon is the most important element to life. Without this element, life as we know it would not exist. As you will see, carbon is the central element in compounds necessary for life-organic compounds. These compounds include carbohydrates, lipids, proteins and nucleic acids. Q: What is the most important element to life? A:
A:
output: carbon

Answer the following question given this paragraph: Chemical equations need to be balanced to satisfy the law of conservation of matter. Q: Chemical equations need to be balanced to satisfy the law of what? A:

OPTIONS:
- material of matter
- glow of matter
- speed of matter
- conservation of matter

Answer: conservation of matter

Problem: OPTIONS:
- pus
- progesterone
- collagen
- sebum
Q: Answer the following question given this paragraph: Hair, hair follicle, and oil glands. The oil, called sebum, helps to prevent water loss from the skin. The sebaceous gland secretes sebum, which waterproofs the skin and hair. Q: What does the sebaceous gland secrete which waterproofs the skin and hair? A:
Answer: sebum

Problem:OPTIONS:
- concentrated freeze
- permafreeze
- glacial domination
- permafrost

Answer the following question given this paragraph: Arctic Tundra The Arctic tundra lies north of the subarctic boreal forest and is located throughout the Arctic regions of the northern hemisphere (Figure 44.12). The average winter temperature is -34 C (-34 F) and the average summer temperature is from 3 C to 12 C (37 F52 F). Plants in the arctic tundra have a very short growing season of approximately 1012 weeks. However, during this time, there are almost 24 hours of daylight and plant growth is rapid. The annual precipitation of the Arctic tundra is very low with little annual variation in precipitation. And, as in the boreal forests, there is little evaporation due to the cold temperatures. Plants in the Arctic tundra are generally low to the ground (Figure 44.20). There is little species diversity, low net primary productivity, and low aboveground biomass. The soils of the Arctic tundra may remain in a perennially frozen state referred to as permafrost. The permafrost makes it impossible for roots to penetrate deep into the soil and slows the decay of organic matter, which inhibits the release of nutrients from organic matter. During the growing season, the ground of the Arctic tundra can be completely covered with plants or lichens. Q: What is it called when the soils of the arctic tundra remain in a perennially frozen state? A:
****
A: permafrost

Answer the following question given this paragraph: The blood protein hemoglobin binds with oxygen and carries it from the lungs to cells throughout the body. Heme is a small molecule containing iron that is part of the larger hemoglobin molecule. Oxygen binds to the iron in heme. Q: What blood protein carries oxygen from the lungs to cells throughout the body? A:
OPTIONS:
- plasma
- platelets
- dopamine
- hemoglobin
hemoglobin

Answer the following question given this paragraph: There are only about 25 living species of lancelets. They inhabit the ocean floor where the water is shallow. Lancelet larvae are free-swimming. The adults can swim but spend most of their time buried in the sand. Like tunicates, lancelets are filter feeders. They take in water through their mouth and expel it through an opening called the atriopore (see Figure below ). Lancelets reproduce sexually and have separate sexes. Q: How do lancelets reproduce? A:
OPTIONS:
- asexually
- parthenogenesis
- aerobically
- sexually

Answer:
sexually