input with options: Answer the following question given this paragraph: Regardless of whether reactions are exothermic reactions or endothermic reactions , they all need energy to get started. This energy is called activation energy . Activation energy is like the push you need to start moving down a slide. The push gives you enough energy to start moving. Once you start, you keep moving without being pushed again. Activation energy is defined as the energy that must be overcome in order for a chemical reaction to occur, or the minimum energy required to start a chemical reaction. The concept of activation energy is illustrated in Figure below . Q: What do you call the energy that must be overcome in order for a chemical reaction to occur, or the minimum energy required to start a chemical reaction? A:
OPTIONS:
- expression energy
- phase energy
- kinetic energy
- activation energy
output: activation energy

Q: Answer the following question given this paragraph: rest after sticking together, conserving momentum. But the internal kinetic energy is zero after the collision. A collision in which the objects stick together is sometimes called a perfectly inelastic collision because it reduces internal kinetic energy more than does any other type of inelastic collision. In fact, such a collision reduces internal kinetic energy to the minimum it can have while still conserving momentum. Perfectly Inelastic Collision A collision in which the objects stick together is sometimes called "perfectly inelastic. Q: A perfectly inelastic collision reduces internal kinetic energy to the minimum it can have while still conserving what? A:

OPTIONS:
- heat
- energy
- elements
- momentum

A: momentum

input: OPTIONS:
- hydra
- globular
- polypoid
- medusa Now, answer this question: Answer the following question given this paragraph: Hydrozoa includes nearly 3,500 species, most of which are marine. Most species in this class have both polyp and medusa forms in their life cycle. Many hydrozoans form colonies composed of branches of specialized polyps that share a gastrovascular cavity. Colonies may also be free-floating and contain both medusa and polyp individuals in the colony, as in the Portuguese Man O'War (Physalia) or By-the-Wind Sailor (Velella). Other species are solitary polyps or solitary medusae. The characteristic shared by all of these species is that their gonads are derived from epidermal tissue, whereas in all other cnidarians, they are derived from gastrodermal tissue (Figure 15.14ab). "The Hydrozoa Directory," Peter Schuchert, Museum Geneve, last updated November 2012, http://www. ville-ge. ch/mhng/hydrozoa/hydrozoadirectory. Q: Most hydrozoa have both polyp and what forms in their life cycle? A:
A:
output: medusa

Answer the following question given this paragraph: DNA consists of two long chains of nucleotides. Nitrogen bases on the two chains form hydrogen bonds with each other. Adenine always bonds with thymine, and guanine always bonds with cytosine. These bonds hold the two chains together and give DNA is characteristic double helix, or spiral, shape. You can see the shape of the DNA molecule in Figure below . Sugars and phosphate groups form the "backbone" of each chain of DNA. The bonded bases are called base pairs. RNA, in contrast to DNA, consists of just one chain of nucleotides. Determining the structure of DNA was a big scientific breakthrough. You can read the interesting story of its discovery at the URL below. Q: Dna consists of how many long chains of nucleotides? A:

OPTIONS:
- three
- zero
- one
- two

Answer: two

Problem: OPTIONS:
- theory
- hypothesis
- scientific motion
- scientific law
Q: Answer the following question given this paragraph: Scientists think of nature as a single system controlled by natural laws. Scientists strive to increase their understanding of the natural world by discovering natural laws. Laws of nature are expressed as scientific laws. A scientific law is a statement that describes what always happens under certain conditions in nature. Q: A statement that describes what always happens under certain conditions in nature is also known as what? A:
Answer: scientific law

Answer the following question given this paragraph: Vascular plants are further divided into seedless and seed plants. Q: What are the two types of vascular plants? A:

OPTIONS:
- dahlias and seed
- Water and spore
- ants and seed
- seedless and seed

Answer:
seedless and seed