Answer the following question given this paragraph: View an animation (http://openstaxcollege. org/l/hexokinase2) of induced fit. When an enzyme binds its substrate, an enzyme-substrate complex is formed. This complex lowers the activation energy of the reaction and promotes its rapid progression in one of multiple possible ways. On a basic level, enzymes promote chemical reactions that involve more than one substrate by bringing the substrates together in an optimal orientation for reaction. Another way in which enzymes promote the reaction of their substrates is by creating an optimal environment within the active site for the reaction to occur. The chemical properties that emerge from the particular arrangement of amino acid R groups within an active site create the perfect environment for an enzyme's specific substrates to react. The enzyme-substrate complex can also lower activation energy by compromising the bond structure so that it is easier to break. Finally, enzymes can also lower activation energies by taking part in the chemical reaction itself. In these cases, it is important to remember that the enzyme will always return to its original state by the completion of the reaction. One of the hallmark properties of enzymes is that they remain ultimately unchanged by the reactions they catalyze. After an enzyme has catalyzed a reaction, it releases its product(s) and can catalyze a new reaction. Q: What is formed when an enzyme binds its substrate? A:

OPTIONS:
- vessel - substrate complex
- nucleus - substrate complex
- lock and key model
- enzyme - substrate complex

Answer: enzyme - substrate complex

Problem: OPTIONS:
- skin cell
- red blood cell
- Osteoclast
- white blood cell
Q: Answer the following question given this paragraph: Figure 40.5 The cells and cellular components of human blood are shown. Red blood cells deliver oxygen to the cells and remove carbon dioxide. White blood cellsincluding neutrophils, monocytes, lymphocytes, eosinophils, and basophilsare involved in the immune response. Platelets form clots that prevent blood loss after injury. Q: Neutrophils and lymphocytes are examples of what type of cell? A:
Answer: white blood cell

Problem:OPTIONS:
- bacteria
- cells
- atoms
- dna

Answer the following question given this paragraph: Proto-oncogenes normally help control cell division. Mutations in these genes turn them into oncogenes. Oncogenes promote the division of cells with damaged DNA. Q: Cells that are divided by oncogenes contain damaged what? A:
****
A: dna

Answer the following question given this paragraph: There are a variety of types of movable joints, which are illustrated in Figure below . The joints are classified by how they move. For example, a ball-and-socket joint , such as the shoulder, has the greatest range of motion, allowing movement in several directions. Other movable joints, including hinge joints such as the knee, allow less movement. Q: Give an example of a ball-and-socket joint, which has the greatest range of motion, allowing movement in several directions. A:
OPTIONS:
- pulley
- lever
- monkey wrench
- shoulder
shoulder

Answer the following question given this paragraph: Atmospheric pressure is the pressure exerted by gas particles in Earth's atmosphere as those particles collide with objects. A barometer is an instrument used to measure atmospheric pressure. A traditional mercury barometer consists of an evacuated tube immersed in a container of mercury. Air molecules push down on the surface of the mercury. Because the inside of the tube is a vacuum, the mercury rises inside the tube. The height to which the mercury rises is dependent on the external air pressure. Q: What type of pressure is the pressure exerted by gas particles in earth's atmosphere as those particles collide with objects? A:
OPTIONS:
- vertical pressure
- adjacent pressure
- adjacent pressure
- atmospheric pressure

Answer: atmospheric pressure

input with options: Answer the following question given this paragraph: The next structure is the stamen , consisting of the stalk-like filament that holds up the anther , or pollen sac. The pollen, which is found at the top of the stamen, is the male gametophyte. Q: What is found at the top of the stamen? A:
OPTIONS:
- petals
- fungi
- pistil
- pollen
output:
pollen