Which substance could be a cofactor?
Cofactors can either be ions, such as zinc and iron ions, or organic molecules, such as vitamins or vitamin-derived molecules. Many of these cofactors will attach near the substrate binding site to facilitate the binding of the substrate to the enzyme.
Which of the following pieces of evidence would suggest that a substance entered a cell via active transport as opposed to passive transport?
Which of the following pieces of evidence would suggest that a substance entered a cell via active rather than passive transport? All of the answer options. The substance moved from a low concentration to a high concentration.
Do all enzymes depend on protein cofactors to function?
All enzymes depend on protein cofactors to function. Enzymes are inorganic. An enzyme’s function is unaffected by changes in pH. Enzymes catalyze specific reactions.
What are three true statements about enzymes?
(1) Enzymes may change shape when they bind substrates; (2) Enzymes provide no energy for the reaction, except collision energy; (3) Enzymes may release substrates.
What are the types of cofactor?
There are two types of cofactors: inorganic ions [e.g., zinc or Cu(I) ions] and organic molecules known as coenzymes. Most coenzymes are vitamins or are derived from vitamins. Vitamins are organic compounds that are essential in very small (trace) amounts for the maintenance of normal metabolism.
What is a requirement for osmosis to occur?
Therefore, for osmosis to occur, the membrane must be permeable to water, but impermeable to the solute, and the concentration of the solute must be different on the two sides of the membrane.
What does a cell do to a substance in endocytosis?
What is endocytosis? Endocytosis definition and purposes. Endocytosis is the process by which cells take in substances from outside of the cell by engulfing them in a vesicle. These can include things like nutrients to support the cell or pathogens that immune cells engulf and destroy.
What’s a cofactor in an enzyme?
Cofactor is a non-protein chemical compound that tightly and loosely binds with an enzyme or other protein molecules. Basically, cofactors are split into two groups: coenzymes and prosthetic groups (ions usually).
Which of the following would be an example of a cofactor?
Cofactors are not proteins but rather help proteins, such as enzymes, although they can also help non-enzyme proteins as well. Examples of cofactors include metal ions like iron and zinc.
What are two environmental conditions that affect enzymes?
Enzyme activity can be affected by a variety of factors, such as temperature, pH, and concentration. Enzymes work best within specific temperature and pH ranges, and sub-optimal conditions can cause an enzyme to lose its ability to bind to a substrate.
What is true regarding the function of lipase?
What is TRUE regarding the function of lipase? Lipase lowers the activation energy required to hydrolyze fats. The region of an enzyme that attaches to a substrate.