Imagine that you are conducting an experiment on an enzyme known as sucrase. This enzyme is synthesized and used by yeast cells to break down the disaccharide sucrose (table sugar) into the monosaccharides glucose and fructose
You decide to conduct an experiment to test whether the sucrase enzyme can break down the artificial sweetener sucralose. Sucralose (a "chlorinated" carbohydrate) has some chemical similarity to sucrose, but is different in that three of its hydroxyl groups are missing and replaced with chlorine atoms instead.
Based on the details provided in this scenario, do you think the sucrase enzyme will be able to interact with sucralose?
A) Yes; enzymes such as sucrase are not specific for their substrate.
B) Yes; the enzymes in human cells can interact with artificial sweeteners as if they were sugars.
C) No; sucralose is an ion and not a true carbohydrate.
D) No; all enzymes are highly specific and can react with only a specific substrate.
D
You might also like to view...
Imagine that you are conducting experiments and you have a cell line that responds to an external hormonal signal by entering the apoptotic pathway. How would these cells respond to this hormonal signal if you could instantly and completely inactivate the Bcl-2 protein?
a) none of the choices is correct b) Since Bcl-2 normally protects cells from apoptosis, loss of this protein would prevent apoptosis. c) Since Bcl-2 normally promotes apoptosis, loss of this protein would prevent apoptosis. d) Since Bcl-2 normally protects cells from apoptosis, loss of this protein would cause these cells to go through apoptosis.
Which of the following kingdoms can do photosynthesis?
A. all animals B. some protists C. all bacteria D. some fungi E. all archaea
Which of the following procedures is currently the standard test used in the United States for evaluating the efficiency of antiseptics and disinfectants?
A. use-dilution test B. microbial death rate C. in-use test D. Kelsey-Sykes capacity test E. phenol coefficient
examples of Analogous structures
What will be an ideal response?