Question 22 (1 point) When a substrate concentration is MUCH greater than KM, the rate of catalysis is almost equal to: kcat Kd Vmax None of the above Question 23 (1 point) Which of the following kinetic parameters is a measure of an enzyme's relative efficiency for a specific substrate? KM kcat kcat/ KM Vmax
Added by Mariah J.
Close
Step 1
Step 1: When the substrate concentration is much greater than KM, the rate of catalysis is almost equal to Vmax. Show more…
Show all steps
Your feedback will help us improve your experience
Rabeya Zahid and 81 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Question 44 (5 points) Given an enzyme with Km = 0.5 mM, at what substrate concentration will an enzymatically catalyzed reaction reach 1/4 of the maximum rate (Vmax)? Recall that V = (Vmax * [S]) / (Km + [S]).
Adi S.
When substrate concentration is much lower than KM, the rate of catalysis is A) (Vmax/KM)•[S] B) kcat C) Vmax D) Kmax E) KM/Vmax 2. Which of the following is true of competitive inhibition? A) The KM has no effect and the Vmax increases B) The KM increases and the Vmax doesn't change C) Inhibitor binds in an allosteric site. D) Inhibitor binds to the same site as the substrate E) Inhibitor binds only when the substrate is in the active site.
Anitha M.
Many enzymes obey simple Michaelis-Menten kinetics, which are summarized by the equation $$\text { rate }=V_{\max }[\mathrm{S}] /\left([\mathrm{S}]+K_{\mathrm{m}}\right)$$ where $V_{\max }=\operatorname{maximum}$ velocity, $[\mathrm{S}]=$ concentration of substrate, and $K_{\mathrm{m}}=$ the Michaelis constant. It is instructive to plug a few values of $[\mathrm{S}]$ into the equation to see how rate is affected. What are the rates for [S] equal to zero, equal to $K_{\mathrm{m}}$, and equal to infinite concentration?
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD