Answer the following question given this paragraph: At the end of cytokinesis there are two genetically identical daughter cells. Q: How many identical daughter cells are created at the end of cytokinesis? Choices: - four - three - one - two A:
two

Answer the following question given this paragraph: Scientific experiments involve controls , or subjects that are not tested during the investigation. In this way, a scientist limits the factors, or variables that can cause the results of an investigation to differ. A variable is a factor that can change over the course of an experiment. Independent variables are factors whose values are controlled by the experimenter to determine their relationship with an observed phenomenon. Dependent variables are the observed phenomenon, and change in response to the independent variable. Controlled variables are also important to identify in experiments. They are the variables that are kept constant to prevent them from influencing the effect of the independent variable on the dependent variable. Q: Controlled variables are kept what to prevent them from influencing the effects of the independent variable on the dependent variable? Choices: - mechanical - temporary - fleeting - constant A:
constant

Answer the following question given this paragraph: Wild male and female Sockeye salmon before spawning. Sockeye salmon are blue tinged with silver in color while living in the ocean. Just prior to spawning, both sexes turn red with green heads. Sockeye spawn mostly in streams having lakes in their watershed. The young fish spend up to three years in the freshwater lake before migrating to the ocean. Migratory fish spend from one to four years in salt water, and thus are four to six years old when they return to spawn. Navigation to the home river is thought to be done using the characteristic smell of the stream, and possibly the sun. Q: Both sexes of sockeye salmon turn red with green heads just prior to what? Choices: - dying - feeding - migrating - spawning A:
spawning

Answer the following question given this paragraph: Oxygenated blood is transported by the circulatory system from lungs to tissues throughout the body. Q: Oxygenated blood is transported by what system? Choices: - skeletal - nervous - pulmonary - circulatory A:
circulatory