Answer the following question given this paragraph: electrons, which have a negative electric charge. Q: What kind of charge do electrons have? A:

OPTIONS:
- effective
- unusual
- positive
- negative

Answer: negative

Problem: OPTIONS:
- lipids
- ketones
- aldehydes
- esters
Q: Answer the following question given this paragraph: Carboxylic acids can form esters with alcohols. Q: Carboxylic acids can form what with alcohols? A:
Answer: esters

Problem:OPTIONS:
- Molecule
- cells
- acids
- proteins

Answer the following question given this paragraph: Ribosomes are cellular substructures where proteins are synthesized. They contain about 65% rRNA and 35% protein, held together by numerous noncovalent interactions, such as hydrogen bonding, in an overall structure consisting of two globular particles of unequal size. Molecules of tRNA, which bring amino acids (one at a time) to the ribosomes for the construction of proteins, differ from one another in the kinds of amino acid each is specifically designed to carry. A set of three nucleotides, known as a codon, on the mRNA determines which kind of tRNA will add its amino acid to the growing chain. (For more information on sequences, see Section 19.4 "Protein Synthesis and the Genetic Code". ) Each of the 20 amino acids found in proteins has at least one corresponding kind of tRNA, and most amino acids have more than one. The two-dimensional structure of a tRNA molecule has three distinctive loops, reminiscent of a cloverleaf (Figure 19.11 "Transfer RNA"). On one loop is a sequence of three nucleotides that varies for each kind of tRNA. This triplet, called the anticodon, is complementary to and pairs with the codon on the mRNA. At the opposite end of the molecule is the acceptor stem, where the amino acid is attached. Figure 19.11 Transfer RNA Saylor URL: http://www. saylor. org/books. Q: Ribosomes are cellular substructures where what are synthesized? A:
****
A: proteins

Answer the following question given this paragraph: The first species to colonize a disturbed area such as this are called pioneer species (see Figure below ). They change the environment and pave the way for other species to come into the area. Pioneer species are likely to include bacteria and lichens that can live on bare rock. Along with wind and water, they help weather the rock and form soil. Once soil begins to form, plants can move in. At first, the plants include grasses and other species that can grow in thin, poor soil. As more plants grow and die, organic matter is added to the soil. This improves the soil and helps it hold water. The improved soil allows shrubs and trees to move into the area. Q: What are species that are first to colonize a disturbed area called? A:
OPTIONS:
- novel species
- exploratory species
- brave species
- pioneer species
pioneer species

Answer the following question given this paragraph: The placenta is a spongy mass of blood vessels. Some of the vessels come from the mother. Some come from the fetus. The placenta is attached to the inside of the mother's uterus. The fetus is connected to the placenta by a tube called the umbilical cord . The cord contains two arteries and a vein. Substances pass back and forth between the mother's and fetus's blood through the placenta and cord. Oxygen and nutrients pass from the mother to the fetus. Carbon dioxide passes from the fetus to the mother. Q: The fetus is connected to what by a tube called the umbilical cord? A:
OPTIONS:
- Stomach
- Intestines
- Fallopian tube
- placenta

Answer: placenta

input with options: Answer the following question given this paragraph: Q: What two-word term refers to the number of different species in the community? A:
OPTIONS:
- bacteria richness
- group-richness
- face-richness
- species richness
output:
species richness