3
answers
0
watching
433
views
28 Sep 2019
Oxidation reduction reactions are coupled and referred to as redox reactions. Electrons are the atomic particles that participate in chemical bonds and are used by cells to generate an electrochemical gradient across membranes. Cells have require ATP to maintain membrane properties and metabolism, because ATP has high energy phosphate bonds that may be cleaved to release energy. Cells synthesize ATP through phosphorylation. Cells must perform many chemical reactions within a certain temperature, pH and osmolarity range. In general chemical reactions in a cell would occur over time without enzymes, and it might require big changes in temperature. Enzymes are organic catalysts that increase the rate of reactions without being altered in the process. Review protein structure and function in chapter 2 to understand how enzymes work. Enzymes also may act as 'switches' and be the rate controlling steps in a biochemcial pathway. There are several ways enzyme activity is altered by other factors or physical conditions.
1. The bacterial enzyme streptokinase is used to digest fibrin in patients with atherosclerosis. Why doesn't the injection of streptokinase cause a streptococcal infection?
2. How do we know that streptokinase will break down fibrin and not functional tissue?
3. 5 bromouracil is used as an anti cancer drug it is mistaken for thymine by cellular enzymes during DNA replication, name the enzyme site the nucleoside analog is probably binding.
Most of a cell's energy is derived from the oxidation of carbohydrates. Glucose is the most common oxidized carbohydrate. There are two types of glucose catabolism respiration and fermentation.
4. Is glucose completely broken down in respiration or fermentation?
Oxidation reduction reactions are coupled and referred to as redox reactions. Electrons are the atomic particles that participate in chemical bonds and are used by cells to generate an electrochemical gradient across membranes. Cells have require ATP to maintain membrane properties and metabolism, because ATP has high energy phosphate bonds that may be cleaved to release energy. Cells synthesize ATP through phosphorylation. Cells must perform many chemical reactions within a certain temperature, pH and osmolarity range. In general chemical reactions in a cell would occur over time without enzymes, and it might require big changes in temperature. Enzymes are organic catalysts that increase the rate of reactions without being altered in the process. Review protein structure and function in chapter 2 to understand how enzymes work. Enzymes also may act as 'switches' and be the rate controlling steps in a biochemcial pathway. There are several ways enzyme activity is altered by other factors or physical conditions.
1. The bacterial enzyme streptokinase is used to digest fibrin in patients with atherosclerosis. Why doesn't the injection of streptokinase cause a streptococcal infection?
2. How do we know that streptokinase will break down fibrin and not functional tissue?
3. 5 bromouracil is used as an anti cancer drug it is mistaken for thymine by cellular enzymes during DNA replication, name the enzyme site the nucleoside analog is probably binding.
Most of a cell's energy is derived from the oxidation of carbohydrates. Glucose is the most common oxidized carbohydrate. There are two types of glucose catabolism respiration and fermentation.
4. Is glucose completely broken down in respiration or fermentation?
Jean KeelingLv2
28 Sep 2019
Already have an account? Log in
