Answer the following question given this paragraph: Fractures are breaks in bone, usually caused by excessive stress on bone. Fractures heal when osteoblasts form new bone. The animation at this link shows how this happens: http://www. youtube. com/watch?v=qVougiCEgH8 . Soon after a fracture, the body begins to repair the break. The area becomes swollen and sore. Within a few days, bone cells travel to the break site and begin to rebuild the bone. It takes about two to three months before compact and spongy bone form at the break site. Sometimes the body needs extra help in repairing a broken bone. In such a case, a surgeon will piece a broken bone together with metal pins. Moving the broken pieces together will help keep the bone from moving and give the body a chance to repair the break. Q: What is it called when breaks in bone occur that is usually caused by excessive stress on the bone? Choices: - fragments - faults - ruptures - fractures A:
fractures
Answer the following question given this paragraph: Lipids provide the body with energy and serve other vital functions. One gram of lipids provides 9 Calories of energy. You need to eat small amounts of lipids for good health. However, large amounts can be harmful, especially if they contain saturated fatty acids from animal foods. Q: What essential molecules can be harmful if ingested in large amounts, especially if they contain saturated fatty acids from animal foods? Choices: - oxygen - helium - hydrogen - lipids A:
lipids
Q: Answer the following question given this paragraph: Maintaining a high metabolic rate takes a lot of energy. The energy must come from food. Therefore, mammals need a nutritious and plentiful diet. The diets of mammals are diverse. Except for leaf litter and wood, almost any kind of organic matter may be eaten by mammals. Some mammals are strictly herbivores or strictly carnivores. However, most mammals will eat other foods if necessary. Some mammals are omnivores. They routinely eat a variety of both plant and animal foods. Most mammals also feed on a variety of other species. The few exceptions include koalas, which feed only on eucalyptus plants, and giant pandas, which feed only on bamboo. Types of mammalian diets and examples of mammals that eat them are given in Table below . How would you classify your own diet?. Q: Maintaining a high metabolic rate takes a lot of what? Choices: - fuel - hydrogen - power - energy A:
A: energy
Question: Answer the following question given this paragraph: The cell wall is a rigid layer that surrounds the cell membrane of a plant cell. It's made mainly of the complex carbohydrate called cellulose. The cell wall supports and protects the cell. The cell wall isn't solid like a brick wall. It has tiny holes in it called pores. The pores let water, nutrients, and other substances move into and out of the cell. Q: What rigid layer surrounds the cell membrane of a plant cell? Choices: - bark - epidermis - cuticle - cell wall A:
Answer: cell wall
*Question*
Answer the following question given this paragraph: DNA Double-Helical Structure DNA has a double-helical structure (Figure 2.23). It is composed of two strands, or polymers, of nucleotides. The strands are formed with bonds between phosphate and sugar groups of adjacent nucleotides. The strands are bonded to each other at their bases with hydrogen bonds, and the strands coil about each other along their length, hence the "double helix" description, which means a double spiral. Q: What is composed of two strands of nucleotides in a double-helical structure? Choices: - molecule - RNA - bacteria - dna A:
**Answer**
dna
*Question*
Answer the following question given this paragraph: All oxygen atoms have eight protons, and most have eight neutrons as well. What is the mass number of an oxygen isotope that has nine neutrons? What is the name of this isotope?. Q: What is mass number? Choices: - to total number of electrons and neutrons in a nucleus - to total number of protons and electrons in a nucleus - the total number of protons and chondrichthyes in a nucleus - the total number of protons and neutrons in a nucleus A:
**Answer**
the total number of protons and neutrons in a nucleus