Q: Answer the following question given this paragraph: Human cells have 23 pairs of chromosomes, and each chromosome within a pair is called a homologous chromosome . For each of the 23 chromosome pairs, you received one chromosome from your father and one chromosome from your mother. Alleles are alternate forms of genes found on chromosomes. Homologous chromosomes have the same genes, though they may have different alleles. So, though homologous chromosomes are very similar, they are not identical. The homologous chromosomes are separated when gametes are formed. Therefore, gametes have only 23 chromosomes, not 23 pairs. Q: How many pairs of chromosomes are found in human cells? A:

OPTIONS:
- 25
- 24
- 13
- 23

A: 23

input: OPTIONS:
- pigment
- solid
- calcium
- solvent Now, answer this question: Answer the following question given this paragraph: If you're like Tanya in this picture, you prefer your iced tea sweetened with sugar. Sweetened iced tea is a solution in which solid sugar (the solute) is dissolved in cold liquid tea, which is mostly water (the solvent). When you add sugar to tea, particles of water pull apart particles of sugar. The particles of sugar spread throughout the tea, making all of it taste sweet. Q: In a glass of sweet tea the sugar is known as the solute and the water is known as what? A:
A:
output: solvent

Answer the following question given this paragraph: Molecular orbital theory describes the distribution of electrons in molecules in much the same way that the distribution of electrons in atoms is described using atomic orbitals. Using quantum mechanics, the behavior of an electron in a molecule is still described by a wave function, , analogous to the behavior in an atom. Just like electrons around isolated atoms, electrons around atoms in molecules are limited to discrete (quantized) energies. The region of space in which a valence electron in a molecule is likely to be found is called a molecular orbital (2). Like an atomic orbital, a molecular orbital is full when it contains two electrons with opposite spin. We will consider the molecular orbitals in molecules composed of two identical atoms (H2 or Cl2, for example). Such molecules are called homonuclear diatomic molecules. In these diatomic molecules, several types of molecular orbitals occur. The mathematical process of combining atomic orbitals to generate molecular orbitals is called the linear combination of atomic orbitals (LCAO). The wave function describes the wavelike properties of an electron. Molecular orbitals are combinations of atomic orbital wave functions. Combining waves can lead to constructive interference, in which peaks line up with peaks, or destructive interference, in which peaks line up with troughs. Q: Which theory describes the distribution of electrons in molecules in much the same way that the distribution of electrons in atoms is described using atomic orbitals? A:

OPTIONS:
- molecular distribution theory
- atomic orbital theory
- atomic distribution theory
- molecular orbital theory

Answer: molecular orbital theory

Problem: OPTIONS:
- methane and oil
- coal and methane
- repository and oil
- coal and oil
Q: Answer the following question given this paragraph: Natural gas is often found along with coal or oil in underground deposits. This is because natural gas forms with these other fossil fuels. One difference between natural gas and oil is that natural gas forms at higher temperatures. Q: Natural gas is often found along with what other fossil fuels in underground deposits? A:
Answer: coal and oil

Problem:OPTIONS:
- crystals
- eons
- toxins
- ions

Answer the following question given this paragraph: In ordinary chemical reactions, the nucleus of each atom (and thus the identity of the element) remains unchanged. Electrons, however, can be added to atoms by transfer from other atoms, lost by transfer to other atoms, or shared with other atoms. The transfer and sharing of electrons among atoms govern the chemistry of the elements. During the formation of some compounds, atoms gain or lose electrons, and form electrically charged particles called ions (Figure 2.28). Q: When atoms gain or lose electrons, they can form electrically charged particles called what? A:
****
A: ions

Problem:OPTIONS:
- electrolysis
- birthing
- capitis
- cytokinesis

Answer the following question given this paragraph: 3. The third step is the division of the rest of the cell. This is called cytokinesis, as it is in a prokaryotic cell. During this step, the cytoplasm divides, and two daughter cells form. Q: The cytoplasm divides during what stage of the cell cycle? A:
****
A:
cytokinesis