Q: What term means the minimum energy required in order for a collision between molecules to result in a chemical reaction? Read this paragraph and choose the correct option from the provided answers: Summary A minimum energy (activation energy, Ea) is required for a collision between molecules to result in a chemical reaction. Plots of potential energy for a system versus the reaction coordinate show an energy barrier that must be overcome for the reaction to occur. The arrangement of atoms at the highest point of this barrier is the activated complex, or transition state, of the reaction. At a given temperature, the higher the Ea, the slower the reaction. The fraction of orientations that result in a reaction is the steric factor. The frequency factor, steric factor, and activation energy are related to the rate constant in the Arrhenius equation: k = Ae - Ea / RT. A plot of the natural logarithm of k versus 1/T is a straight line with a slope of Ea/R. Saylor URL: http://www. saylor. org/books. Choices: - maximum energy - solar energy - depletion energy - activation energy A:
activation energy

Q: After spermatids form, they move where to mature into sperm? Read this paragraph and choose the correct option from the provided answers: After spermatids form, they move into the epididymis to mature into sperm, like the one shown in Figure below . The spermatids grow a tail and lose excess cytoplasm from the head. When a sperm is mature, the tail can rotate like a propeller, so the sperm can propel itself forward. Mitochondria in the connecting piece produce the energy (ATP) needed for movement. The head of the mature sperm consists mainly of the nucleus, which carries copies of the father's chromosomes. The part of the head called the acrosome produces enzymes that help the sperm head penetrate an egg. Choices: - into the prostate - into the volaris - into the vans deferens - into the epididymis A:
into the epididymis

Q: Q: According to early accounts, newton was inspired to make the connection between falling bodies and astronomical motions when he saw an apple fall from a tree and realized that if the gravitational force could extend above the ground to a tree, it might also reach this? Read this paragraph and choose the correct option from the provided answers: Figure 6.20 According to early accounts, Newton was inspired to make the connection between falling bodies and astronomical motions when he saw an apple fall from a tree and realized that if the gravitational force could extend above the ground to a tree, it might also reach the Sun. The inspiration of Newton's apple is a part of worldwide folklore and may even be based in fact. Great importance is attached to it because Newton's universal law of gravitation and his laws of motion answered very old questions about nature and gave tremendous support to the notion of underlying simplicity and unity in nature. Scientists still expect underlying simplicity to emerge from their ongoing inquiries into nature. Choices: - stars - moon - horizon - sun A:
A: sun

Question: Q: What do you call any device that makes work easier by changing a force? Read this paragraph and choose the correct option from the provided answers: A machine is any device that makes work easier by changing a force. Work is done whenever a force moves an object over a distance. The amount of work done is represented by the equation:. Choices: - technology - invention - battery - machine A:
Answer: machine

*Question*
Q: What is the main makeup of the cell membrane? Read this paragraph and choose the correct option from the provided answers: You can see a model of the cell membrane in Figure below . The molecules that make up the cell membrane are mainly phospholipids. There are two layers of phospholipids. They are arranged so the lipid tails are on the inside of the membrane. They make the interior of the membrane hydrophobic, or "water fearing". The lipid heads point toward the outside of the membrane. The make the outer surfaces of the membrane hydrophilic, or "water loving". Different types of proteins are embedded in the lipid layers. The proteins are needed to help transport many substances across the membrane. Choices: - glucose - antibodies - filaments - phospholipids A:
**Answer**
phospholipids

Q: In what type of diabetes can the pancreas still make insulin, but the cells of the body cannot use it efficiently? Read this paragraph and choose the correct option from the provided answers: Type 2 diabetes occurs when body cells are no longer sensitive to insulin. The pancreas may still make insulin, but the cells of the body cannot use it efficiently. Being overweight and having high blood pressure increase the chances of developing type 2 diabetes. Type 2 diabetes usually develops in adulthood, but it is becoming more common in teens and children. This is because more young people are overweight, due to a high sugar and fat diet, now than ever before. Choices: - type 3 diabetes - type 1 diabetes - type A diabetes - type 2 diabetes A:
type 2 diabetes