Table of Contents
What effect can exposure to heat electricity or radiation have on an enzyme molecule quizlet?
Exposure to excessive heat, radiation, electricity, certain chemicals, or fluids with extreme pH values can denature the conformation of an enzyme.
Which piece splits apart during a reaction that is catalyzed by an enzyme?
Each step may be catalyzed by an enzyme. A large molecule is split apart at a certain point and a H atom attaches to one of the new molecules while a hydroxyl group is attached to the other. ex: hydrolysis of a disaccharide yields two monosaccharide molecules.
Which characteristic of the genetic code lowers the likelihood of a mutation resulting in a change of a protein function?
Because their effect on survival is great. Which characteristic of the genetic code lowers the likelihood of a mutation resulting in a change of a protein function? Its redundancy.
What type of molecule is formed when glycerol and three fatty acids are substrates for dehydration synthesis?
Triglycerides are composed of a glycerol molecule attached to three fatty acids by a dehydration synthesis reaction. Explain why fatty acids with hydrocarbon chains that contain only single bonds are called saturated fatty acids.
Which is an observable effect of radiation damage to DNA?
Radiation damage starts at the cellular level. Radiation which is absorbed in a cell has the potential to impact a variety of critical targets in the cell, the most important of which is the DNA. Evidence indicates that damage to the DNA is what causes cell death, mutation, and carcinogenesis.
How does an enzyme recognize its substrate quizlet?
How does an enzyme recognize its substrate? The shape of the active site on the enzyme fits with the substrate. What factors affect the speed of an enzyme-controlled reaction? The factors that affect the speed of an enzyme-controlled reaction are the number of enzymes and substrate molecules in the cell.
What do enzymes do in a cell?
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
What is a dehydration synthesis?
Dehydration synthesis is the creation of larger molecules from smaller monomers where a water molecule is released. This can be used in the creation of synthetic polymers such as polyethylene terephthalate (PET), or the creation of large biological molecules such as carbohydrate polymers and triglycerides.
Which is the oxidant in a burning reaction?
Burning or combustion is a high temperature, exothermic, redox reaction, occurring between a fuel and an oxidant. Usually, the oxidant is the atmospheric oxygen while the mixture of gaseous byproducts is called the smoke. Here, heat and light are the forms through which the energy of the reaction releases.
Where does respiration take place in a cell?
Respiration or cellular respiration is the set of chemical reactions that take place in a cell, converting biochemical energy into ATP. Although it is technically a type of combustion reaction, it occurs inside the cell, slowly releasing energy through a series of reactions.
What is the difference between burning and respiration?
Hear, heat has to be given to initiate the chemical reaction of burning. Generally, it is a type of rapid oxidation, which results in the release of energy quickly in the form of heat and light. Therefore, the main difference between respiration and burning is the type of bond breaking.
How is energy released during respiration and released during burning?
The energy released during respiration is stored in ATP molecules, while a small amount of energy is liberated in the form of heat. In contrast, the energy is released in the form of heat and light during burning. Respiration occurs at physiological temperatures while burning occurs at high temperatures.