input with options: Answer the following question given this paragraph: Density is mass per unit volume. Density is a measure of how closely molecules are packed together. The closer together they are, the greater the density. Since air is a gas, the molecules can pack tightly or spread out. Q: What is the measure of how closely molecules are packed together? A:
OPTIONS:
- length
- volume
- frequency
- density
output: density

Q: Answer the following question given this paragraph: What weighs about three pounds and contains up to 100 billion cells? The answer is the human brain. The brain is the control center of the nervous system. It's like the pilot of a plane. It tells other parts of the nervous system what to do. Q: Which organ is the control center of the nervous system? A:

OPTIONS:
- the heart
- the spine
- the lungs
- the brain

A: the brain

input: OPTIONS:
- endothermic
- geothermal
- biochemical
- exothermic Now, answer this question: Answer the following question given this paragraph: A: A hot water heater increases the temperature of water in most homes. Many hot water heaters burn a fuel such as natural gas. The burning fuel causes the water to get hot because combustion is an exothermic reaction. Q: In a hot water heater, burning fuel causes the water to get hot because combustion is what type of reaction? A:
A:
output: exothermic

Answer the following question given this paragraph: Vesicles are much smaller than vacuoles and have a variety of functions. Some vesicles pinch off from the membranes of the endoplasmic reticulum and Golgi apparatus. These vesicles store and transport proteins and lipids. Other vesicles are used as chambers for biochemical reactions. Q: Are vesicles larger or smaller than vacuoles? A:

OPTIONS:
- larger
- narrower
- wider
- smaller

Answer: smaller

Problem: OPTIONS:
- alveoli
- golgi apparatus
- cytoplasm
- the matrix
Q: Answer the following question given this paragraph: Q: Besides the inner membrane, where are many respiratory enzymes found? A:
Answer: the matrix

Answer the following question given this paragraph: Technically, any redox reaction can be set up to make a voltaic cell. In modern society, however, only certain redox reactions are put to practical use. A portable voltaic cell that generates electricity to power devices for our convenience is called a battery. All batteries are based on redox reactions. The first battery (called a "voltaic pile") was constructed by the Italian scientist Alessandro Volta in 1800 and was based on the copper/zinc reaction depicted in - ball-ch14_s03_f01. Unfortunately, it was messy, requiring quantities of copper and zinc salts dissolved in water. In 1866, the French scientist Georges Leclanche invented the dry cell, a precursor to today's modern battery. A schematic of a dry cell is shown in - ball-ch14_s03_f02. The zinc case and the central carbon rod serve as the anode and cathode, respectively. The other reactants are combined into a moist paste that minimizes free liquid, so the battery is less messy (hence the name dry cell). The actual redox reaction is complex but can be represented by the following redox reaction: + 2+ Zn + 2MnO2 + 2NH4 Zn + Mn2O3 + 2NH3 + H2O A dry cell has a voltage of about 1.56 V. While common and useful, dry cells have relatively short lifetimes and contain acidic components. They also cannot be recharged, so they are one-use only. Batteries that can be used only once are calledprimary batteries. Figure 14.2 Dry Cells. Q: Technically, any redox reaction can be set up to make a what? A:

OPTIONS:
- Black Cell
- blocky cell
- skaht cell
- voltaic cell

Answer:
voltaic cell