Supposed Myth: Cockroaches don’t breathe oxygen. … They do, however, breathe oxygen. Scientists are investigating whether or not roaches sometimes hold their breath to prevent water loss. The same tubes – called spiracles – that roaches use to breathe are also used to transport water vapor out. How many spiraclesRead More →
From Egg to Embryo First, the zygote becomes a solid ball of cells. Then it becomes a hollow ball of cells called a blastocyst. Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filledRead More →
Reflection off of rough surfaces such as clothing, paper, and the asphalt roadway leads to a type of reflection known as diffuse reflection. Whether the surface is microscopically rough or smooth has a tremendous impact upon the subsequent reflection of a beam of light. How do you use diffuse reflectionRead More →
Disequilibrium occurs when the markets fail to clear and find their final equilibrium point. Disequilibrium could occur if the price was below the market equilibrium price causing demand to be greater than supply, and therefore causing a shortage. Which needs to happen in order to stop disequilibrium from happening? WhichRead More →
During this period, called interkinesis, the nuclear membrane in each of the two cells reforms around the chromosomes. What is the significance of interkinesis in cell division? Meiosis is a specialized form of cell division that ultimately gives rise to non-identical sex cells. There are two successive nuclear divisions: meiosisRead More →