Home
Class 11
BIOLOGY
Cyanide kills animlas by inhibiting cyt...

Cyanide kills animlas by inhibiting cytochrome oxidase (an enzyme of respiration) by binding irreversibly with copper. It does not bind with active site. This is an example of

A

competitive inhinition

B

non competitive inhibition

C

feed back inhibition

D

all of the above

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ANIMAL TISSUES

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|193 Videos
  • CELL- THE BASIC UNIT OF LIFE ( CELL AND ITS STRUCTURAL ORGANISATION )

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE ANSWER TYPE|312 Videos

Similar Questions

Explore conceptually related problems

Cyanide causes irreversible inhibition of cytochrome oxidase. It

Assertion (A) : Non-competitive inhibitor inhibits the catalytic activity of enzyme by binding with its active site. Reason (R): Non-competitive inhibitor changes the shape of the active site in such a way that substrate can't recognise it

Explain with suitable diagram in how many ways a drug can bind to the active site of an enzyme thereby preventing a substrate to bind with that enzyme.

What is the role of competitive inhibitor during enzyme action? (a) It enhances enzyme action (b) It declines enzyme action (c) It alters the active site of the enzyme and prevents the binding of substrate (d) it inhibits breaking of chemical bond of the substrate

Arrange the steps of catalytic action of an enzyme in order and select the correct option I. The enzyme releases the products of the reaction and the enzyme is free to bind to another substrate II. The active site of enzyme is in close proximity of the substrate and breaks the chemical bonds of the substrate III. The binding of substrate induces the enzyme to alter its shape fitting more tightly around substrate. IV. The substrate binds to the active site of the enzyme

Serine, aspartic acid and phenylalanine are present at active site of an enzyme. What are the forces responsible for binding of these amino acids to active site?

Identify the wrong statements (a) The substrate binds to active site of enzyme and not fitting into active site (b) The binding of substrate induces the enzyme to alter its shape (c ) Chemical bonds of substrate break down not to form now enzyme product complex (d) The enzyme releases the products of the reaction and run through catalytic cycle once again

[A]: Enzyme papain splits antibody molecule into two fab (fab = fragment anti- gen binding fragments) each with antigen binding site. [R]: The products formed by interaction of antibody-antigen depend on number of anti- genic determinants present on antibody.

Assertion (A): Competitive inhibitors compete with natural substrate for their attachment on the active sites of enzymes. Reason (R) : In competitive inhibition, inhibitor binds to the allosteric site of the enzyme.

Read the following statements regarding the mineral nutrition in plants (1) For the elements that are actively mobilized within the plants, the deficiency symptoms tend to appear first in the young tissues. (2) Manganese competes with iron and magnesium for uptake and with magnesium for binding with enzymes. (3) Manganese inhibits calcium traslocation in shoot apex. (4) Rhodospirillum is aerobic free-living nitrogen fixing microbe. Which of these are correct