Answer the following question given this paragraph: During anaphase I the spindle fibers shorten, and the homologous chromosome pairs are separated from each other. This occurs as the chiasmata are severed, pulling homologous chromosomes apart. One chromosome from each pair moves toward one pole, with the other moving toward the other pole, resulting in a cell with 23 chromosomes at one pole and the other 23 at the other pole. Each chromosome still contains a pair of sister chromatids; the sister chromatids remain attached at the centromere. Q: How many pairs of chromosomes are there? Choices: - 16 - 25 - 24 - 23 A:
23
Answer the following question given this paragraph: Competition is a relationship between organisms that depend on the same resources. Competition can occur between members of the same species or between members of different species. Q: What can be calculated by solving the average speed formula? Choices: - accelaration - distance or mass - mass or time - distance or time A:
distance or time
Q: Answer the following question given this paragraph: An error is a boundary on the precision and accuracy of the result of a measurement. Some errors are caused by unpredictable changes in the measuring devices (such as balances, rulers, or calipers), but other errors can be caused by reading a measuring device incorrectly or by using broken or malfunctioning equipment. Such errors can have an impact on the reliability of the experiment's results; they affect the accuracy of measurements. For example, you use a balance to obtain the mass of a 100 gram block. Three measurements that you get are: 93.1 g, 92.0 g, and 91.8 g. The measurements are precise, as they are close together, but they are not accurate. Q: In statistics a boundary on the precision and accuracy is known as what? Choices: - instance - median - frequency - error A:
A: error
Question: Answer the following question given this paragraph: The basic components of nucleic acids are nucleotides. A nucleotide is a molecule that contains a five-carbon sugar, a phosphate group, and a nitrogen containing base. The five-carbon sugar is either ribose, in the case of RNA, or deoxyribose, in the case of DNA. The only difference between the two molecules is the presence of a hydroxyl group attached to one member of the carbon ring in RNA. In DNA, that same carbon atom is attached only to a hydrogen atom (see Figure below ). Note that in drawing the structure of organic molecules, the single hydrogen atoms are not shown in the structure but are understood to be attached at each carbon point unless another molecule is shown. Q: What molecules with a nitrogen base are the basic components of nucleic acids? Choices: - sporozoans - enzymes - nuclides - nucleiotides A:
Answer: nucleiotides
*Question*
Answer the following question given this paragraph: Reflecting surfaces do not have to be flat. The most common curved mirrors are spherical. A spherical mirror is called a concave mirror if the center of the mirror is further from the viewer than the edges are. A spherical mirror is called a convex mirror if the center of the mirror is closer to the viewer than the edges are. Q: The most common curved mirrors are what? Choices: - solid - concave - convex - spherical A:
**Answer**
spherical
(Q).
Answer the following question given this paragraph: You have ten times as many bacterial cells as human cells in your body. Luckily for you, most of these bacteria are harmless. However, some of them can cause disease. Any organism that causes disease is called a pathogen . Diseases caused by bacterial pathogens include food poisoning, strep throat, and Lyme disease. Q: Any organism that causes disease is called what? Choices: - a parasite - a virus - a microbe - a pathogen A:
(A).
a pathogen