Q: Answer the following question given this paragraph: The cell membrane consists of two layers of phospholipids. It encloses the cytoplasm and controls what enters and leaves the cell. Q: How many layers of phospholipids does the cell membrane contain? A: | OPTIONS:
- four
- five
- three
- two
A: two

Q: Answer the following question given this paragraph: Organisms that have a diploid life cycle spend the majority of their lives as diploid adults. All diploid adults inherit half of their DNA from each parent. When they are ready to reproduce, diploid reproductive cells undergo meiosis and produce haploid gametes. These gametes then fuse through fertilization and produce a diploid zygote, which immediately enters G 1 of the cell cycle. Next, the zygote's DNA is replicated. Finally, the processes of mitosis and cytokinesis produce two genetically identical diploid cells. Through repeated rounds of growth and division, this organism becomes a diploid adult and the cycle continues. This is the life cycle of humans. Q: What is the series of changes in the life of an organism? A: | OPTIONS:
- insect metamorphosis
- evolution
- circle of life
- life cycle
A: life cycle

Q: Answer the following question given this paragraph: In endothermic reactions, the temperature of the products is typically lower than the temperature of the reactants. The drop in temperature may be great enough to cause liquids to freeze. That's what happens in the endothermic reaction at this URL: http://www. bbc. co. uk/schools/gcsebitesize/science/add_aqa_pre_2011/chemreac/energychangesrev1. shtml . Q: The temperature of the products is typically lower than the temperature of the reactants in what type of reaction? A: | OPTIONS:
- autotrophic
- exothermic
- parabolic
- endothermic
A: endothermic

Q: Answer the following question given this paragraph: Blood pressure occurs when circulating blood puts pressure on the walls of blood vessels. Q: What is caused when circulating blood puts pressure on the walls of blood vessels? A: | OPTIONS:
- aneurysm
- atherosclerosis
- high cholesterol
- blood pressure
A: blood pressure