Answer the following question given this paragraph: Some reactions need extra help to occur quickly. They need another substance, called a catalyst. A catalyst is a substance that increases the rate of a chemical reaction but is not changed or used up in the reaction. The catalyst can go on to catalyze many more reactions. Q: What is the term for a substance that increases the rate of a chemical reaction but is not changed or used up in the reaction? A:
OPTIONS:
- a mechanism
- an acid
- a contribute
- a catalyst
a catalyst

Answer the following question given this paragraph: The penis is a cylinder-shaped organ. It contains the urethra. The urethra is a tube that carries urine out of the body. The urethra also carries sperm out of the body. Q: What tube carries urine out of the body? A:
OPTIONS:
- fallopian tube
- uterus
- kidney
- urethra

Answer: urethra

Question: Answer the following question given this paragraph: In this equation, two substances combine to make a single substance. This is a composition reaction. Two different substances react to make two new substances. This does not fit the definition of either a composition reaction or a decomposition reaction, so it is neither. In fact, you may recognize this as a double-replacement reaction. A single substance reacts to make multiple substances. This is a decomposition reaction. Q: What type of reaction causes two substances to combine to make a single substance? A:
OPTIONS:
- component reaction
- spontaneous mutation
- metabolism
- composition reaction
Answer: composition reaction

input with options: Answer the following question given this paragraph: 15.11 Amines: Structures and Names LEARNING OBJECTIVES Identify the general structure for an amine. Identify the functional group for amines. Determine the structural feature that classifies amines as primary, secondary, or tertiary. Use nomenclature systems to name amines. Amines are classified according to the number of carbon atoms bonded directly to the nitrogen atom. A primary (1) amine has one alkyl (or aryl) group on the nitrogen atom, a secondary (2) amine has two, and a tertiary (3) amine has three (http://catalog. flatworldknowledge. com/bookhub/reader/2547. Q: Amines are classified according to the number of carbon atoms bonded directly to what atom? A:
OPTIONS:
- helium
- oxygen
- hydrogen
- nitrogen
output: nitrogen

Q: Answer the following question given this paragraph: A lichen is a mutualistic relationship between a fungus and a photosynthetic organism. The other organism is usually a cyanobacterium or green alga. The fungus grows around the bacterial or algal cells. The fungus benefits from the constant supply of food produced by the photosynthesizer. The photosynthesizer benefits from the water and nutrients absorbed by the fungus. Figure below shows lichen growing on a rock. Q: The fungus benefits from the constant supply of food produced by what? A:

OPTIONS:
- the host
- the spermatophyte
- the phytoflagellate
- the photosynthesizer

A: the photosynthesizer

Answer the following question given this paragraph: The final product of the Calvin cycle is glucose. Q: What is the final product of the calvin cycle? A:
OPTIONS:
- chloride
- sucrose
- insulin
- glucose
glucose