Answer the following question given this paragraph: When milk is pasteurized, it is heated to high temperatures. These high temperatures denature the proteins in bacteria, so they cannot carry out needed functions to grow and multiply. Q: Milk is usually subjected to what process, where high temperatures denature the proteins in bacteria so they cannot carry out functions needed to grow and multiply? Choices: - vaporization - Cleaning - crystallization - pasteurization A:
pasteurization
Answer the following question given this paragraph: The atmosphere is made of gases that are essential for photosynthesis and other life activities. Q: What is made of gases that are essential for photosynthesis and other life activities? Choices: - air - ocean - stratosphere - atmosphere A:
atmosphere
Q: Answer the following question given this paragraph: Chemistry is a branch of science. Although science itself is difficult to define exactly, the following definition can serve as starting point. Science is the process of knowing about the natural universe through observation and experiment. Science is not the only process of knowing (e. , the ancient Greeks simply sat and thought), but it has evolved over more than 350 years into the best process that humanity has devised to date to learn about the universe around us. The process of science is usually stated as the scientific method, which is rather naively described as follows: (1) state a hypothesis, (2) test the hypothesis, and (3) refine the hypothesis. Actually, however, the process is not that simple. (For example, I don't go into my lab every day and exclaim, "I am going to state a hypothesis today and spend the day testing it!") The process is not that simple because science and scientists have a body of knowledge that has already been identified as coming from the highest level of understanding, and most scientists build from that body of knowledge. An educated guess about how the natural universe works is called a hypothesis. A scientist who is familiar with how part of the natural universe workssay, a chemistis interested in furthering that knowledge. That person makes a reasonable guessa hypothesisthat is designed to see if the universe works in a new way as well. Here's an example of a hypothesis: "if I mix one part of hydrogen with one part of oxygen, I can make a substance that contains both elements. " Most good hypotheses are grounded in previously understood knowledge and represent a testable extension of that knowledge. The scientist then devises ways to test if that guess is or is not correct. That is, the scientist plans experiments. Experiments are tests of the natural Saylor URL: http://www. saylor. org/books. Q: Science is the process of knowing about the natural universe through observation and this? Choices: - Test - variation - experimental - experiment A:
A: experiment
Question: Answer the following question given this paragraph: Note: Atomic mass is given to three decimal places, if known. Now that we understand that atoms have mass, it is easy to extend the concept to the mass of molecules. The molecular mass is the sum of the masses of the atoms in a molecule. This may seem like a trivial extension of the concept, but it is important to count the number of each type of atom in the molecular formula. Also, although each atom in a molecule is a particular isotope, we use the weighted average, or atomic mass, for each atom in the molecule. For example, if we were to determine the molecular mass of dinitrogen trioxide, N2O3, we would need to add the atomic mass of nitrogen two times with the atomic mass of oxygen three times:. Q: What is the sum of the masses of the atoms in a molecule? Choices: - compound mass - mass effect - atomic energy - molecular mass A:
Answer: molecular mass
*Question*
Answer the following question given this paragraph: Polar tundra climates occur near the poles. Tundra climates have permafrost. Permafrost is layer of ground below the surface that is always frozen, even in the summer. Only small plants, such as mosses, can grow in this climate. Q: What is the layer of ground below the surface that is always frozen, even in the summer? Choices: - tundra - bedrock - upper crust - permafrost A:
**Answer**
permafrost
(Question)
Answer the following question given this paragraph: Sea level is the midpoint between high and low tide. It can vary around Earth. Q: What is the common name for the midpoint between high and low tide? Choices: - middle level - clouds level - floods level - sea level A:
(Answer)
sea level