Answer the following question given this paragraph: Proteins Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective; they may serve in transport, storage, or membranes; or they may be toxins or enzymes. Each cell in a living system may contain thousands of different proteins, each with a unique function. Their structures, like their functions, vary greatly. They are all, however, polymers of amino acids, arranged in a linear sequence. The functions of proteins are very diverse because there are 20 different chemically distinct amino acids that form long chains, and the amino acids can be in any order. For example, proteins can function as enzymes or hormones. Enzymes, which are produced by living cells, are catalysts in biochemical reactions (like digestion) and are usually proteins. Each enzyme is specific for the substrate (a reactant that binds to an enzyme) upon which it acts. Enzymes can function to break molecular bonds, to rearrange bonds, or to form new bonds. An example of an enzyme is salivary amylase, which breaks down amylose, a component of starch. Hormones are chemical signaling molecules, usually proteins or steroids, secreted by an endocrine gland or group of endocrine cells that act to control or regulate specific physiological processes, including growth, development, metabolism, and reproduction. For example, insulin is a protein hormone that maintains blood glucose levels. Proteins have different shapes and molecular weights; some proteins are globular in shape whereas others are fibrous in nature. For example, hemoglobin is a globular protein, but collagen, found in our skin, is a fibrous protein. Protein shape is critical to its function. Changes in temperature, pH, and exposure to chemicals may lead to permanent changes in the shape. Q: What are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules? A:
OPTIONS:
- carbons
- acids
- cells
- proteins
proteins

Answer the following question given this paragraph: Acid rain has severe consequences on both natural and man-made objects. Acid rain degrades marble statues like the one on the left (A). The trees in the forest on the right (B) have been killed by acid rain. Q: What phenomenon has severe consequences on both natural and man-made objects, including killing trees and degrading marble statues? A:
OPTIONS:
- carbon rain
- oxygen rain
- natural rain
- acid rain

Answer: acid rain

Question: Answer the following question given this paragraph: Gastropods include snails and slugs. They use their foot to crawl. They have a well-developed head. There are many thousands of species of sea snails and sea slugs, as well as freshwater snails, freshwater limpets, land snails and land slugs. Gastropods live in many diverse habitats, from gardens to deserts and mountains. They also live in rivers, lakes and the ocean. Most shelled gastropods have a one-piece shell that is typically coiled or spiraled, but not all gastropods have shells. Gastropods have no sense of hearing, but they can see and have a keen sense of smell. In land-based gastropods, the olfactory organs (for smell) are the most important. These are located on the tentacles. Q: Where are the olfactory organs of snails located? A:
OPTIONS:
- their feet
- their anus
- their shell
- their tentacles
Answer: their tentacles

input with options: Answer the following question given this paragraph: A transverse wave is a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels. Another example of a transverse wave is the wave that passes through a rope with you shake one end of the rope up and down, as in the Figure below . The direction of the wave is down the length of the rope away from the hand. The rope itself moves up and down as the wave passes through it. You can watch a video of a transverse wave in a rope at this URL: http://www. youtube. com/watch?v=TZIr9mpERbU . Q: What term describes a wave in which particles of the medium vibrate at right angles, or perpendicular, to the direction that the wave travels? A:
OPTIONS:
- drainage wave
- symmetrical wave
- stimulation wave
- transverse wave
output: transverse wave

Q: Answer the following question given this paragraph: Polarized filters block 50% of unpolarized light. If two filters are oriented so that their polarization axes are aligned, how much light is transmitted? What about if their axes are oriented perpendicular to each other? Draw two diagrams below to support your answers. Q: How much unpolarized light does a polarized filter block? A:

OPTIONS:
- 40 %
- 60 %
- 100%
- 50%

A: 50%

Answer the following question given this paragraph: the distance light can travel in one year, 9.5 trillion kilometers. Q: What travels 9.5 trillion kilometers a year? A:
OPTIONS:
- Sound
- electricity
- air
- light
light