Answer the following question given this paragraph: Enzymes may also allow reactions to occur by different pathways that have lower activation energy. Q: What catalyst substances may also allow reactions to occur by different pathways that have lower activation energy? A:

OPTIONS:
- carbohydrates
- hormones
- calories
- enzymes

Answer: enzymes

Problem: OPTIONS:
- watson structure
- right structure
- time structure
- lewis structure
Q: Answer the following question given this paragraph: In almost all cases, chemical bonds are formed by interactions of valence electrons in atoms. To facilitate our understanding of how valence electrons interact, a simple way of representing those valence electrons would be useful. A Lewis electron dot diagram (or electron dot diagram or a Lewis diagram or a Lewis structure) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. The number of dots equals the number of valence electrons in the atom. These dots are arranged to the right and left and above and below the symbol, with no more than two dots on a side. (It does not matter what order the positions are used. ) For example, the Lewis electron dot diagram for hydrogen is simply. Q: What is a representation of the valence electrons of an atom that uses dots around the symbol of the element? A:
Answer: lewis structure

Problem:OPTIONS:
- stops
- revolves
- oscillates
- rotates

Answer the following question given this paragraph: 23.6 Back Emf It has been noted that motors and generators are very similar. Generators convert mechanical energy into electrical energy, whereas motors convert electrical energy into mechanical energy. Furthermore, motors and generators have the same construction. When the coil of a motor is turned, magnetic flux changes, and an emf (consistent with Faraday's law of induction) is induced. The motor thus acts as a generator whenever its coil rotates. This will happen whether the shaft is turned by an external input, like a belt drive, or by the action of the motor itself. That is, when a motor is doing work and its shaft is turning, an emf is generated. Lenz's law tells us the emf opposes any change, so that the input emf that powers the motor will be opposed by the motor's self-generated emf, called the back emf of the motor. (See Figure 23.25. Q: The motor thus acts as a generator whenever its coil does what? A:
****
A: rotates

Answer the following question given this paragraph: When the wind deposits sand, it forms small hills. These hills are called sand dunes ( Figure below ). For sand dunes to form, there must be plenty of sand and wind. Sand dunes are found mainly in deserts and on beaches. Q: When the wind deposits sand, it forms small hills, what are these hills called? A:
OPTIONS:
- sand tunnels
- snow banks
- mud puddles
- sand dunes
sand dunes

Answer the following question given this paragraph: Plants are a large and varied group of organisms. There are close to 300,000 species of catalogued plants. Of these, about 260,000 are plants that produce seeds. Mosses, ferns, conifers, and flowering plants are all members of the plant kingdom. The plant kingdom contains mostly photosynthetic organisms; a few parasitic forms have lost the ability to photosynthesize. The process of photosynthesis uses chlorophyll, which is located in organelles called chloroplasts. Plants possess cell walls containing cellulose. Most plants reproduce sexually, but they also have diverse methods of asexual reproduction. Plants exhibit indeterminate growth, meaning they do not have a final body form, but continue to grow body mass until they die. Q: The process of photosynthesis uses chlorophyll, which is located in organelles called what? A:
OPTIONS:
- fibroblasts
- mitochondria
- nucleus
- chloroplasts

Answer: chloroplasts

input with options: Answer the following question given this paragraph: Volcanic mountain ranges form when oceanic crust subducts into the mantle at convergent plate boundaries. The Andes Mountains are a chain of coastal volcanic mountains. They are forming as the Nazca plate subducts beneath the South American plate ( Figure below ). Q: What forms when oceanic crust subducts into the mantle at convergent plate boundaries? A:
OPTIONS:
- tsunamis
- glaciers
- coral
- volcanic mountain ranges
output:
volcanic mountain ranges