« previous next »

Author Question: Zinc, an essential trace element for most organisms, is present in the active si (Read 782 times)

Hawke

  • Hero Member
  • *****
  • Posts: 679
on: Jun 10, 2013
Zinc, an essential trace element for most organisms, is present in the active site of the enzyme carboxypeptidase. The zinc most likely functions as a(n)
A) competitive inhibitor of the enzyme.
B) noncompetitive inhibitor of the enzyme.
C) allosteric activator of the enzyme.
D) cofactor necessary for enzyme activity.
E) coenzyme derived from a vitamin.


coco

  • Hero Member
  • *****
  • Posts: 739
Reply #1 on: Jun 11, 2013
The answer is D. I remember this question on my exam.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

Hawke

  • Hero Member
  • *****
  • Posts: 679
Reply #2 on: Jul 3, 2013
Thanks ;) It was right.


« previous next »
 

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

There are multiple pathways for heat exchange between organisms and the environment. There are multiple pathways for heat exchange between organisms and the environment.
Classification of Living Organisms Classification of Living Organisms
Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
Some organisms used as models in genetic research Some organisms used as models in genetic research
Three active forms of vitamin A: all-trans-retinol, -retinal, and –retinoic acid Three active forms of vitamin A: all-trans-retinol, -retinal, and –retinoic acid
Trace Elements of the Human Body Trace Elements of the Human Body
Video: How eudicots (true dicots) differ from monocots Animation

For a complete list of videos, visit our video library