Description : The regulatory i gene of lac operon (A) Is inhibited by lacotse (B) Is inhibited by its own product, the repressor protein (C) Forms a regulatory protein which increases the expression of downstream structural genes (D) Is constitutively expressed
Last Answer : Answer : D
Description : With regard to interferons: a. they are produced by B lymphocytes b. IFN-gamma is produced by cells infected with virus c. IFN-gamma increases MCH class I and II expression in antigen presenting cell d. IFN-gamma is produced by fibroblasts
Last Answer : IFN-gamma is produced by cells infected with virus
Description : Select the drug which reduces cholesterol synthesis in liver, increases expression of LDL receptors on hepatocytes and has been found to reduce mortality due to coronary artery disease: A. Simvastatin B. Nicotinic acid C. Gemfibrozil D. Colestipol (
Last Answer : A. Simvastatin
Description : As the temperature of the air increases from 0 degrees C to 20 degrees C, the wavelength of a sound made by a tuning fork of fixed frequency does which of the following? Does the wavelength w) increase x) decrease y) remain the same z) increase up to a maximum, then remain constant
Last Answer : ANSWER: W -- INCREASE
Description : Which expression has the same value as the one below 38 plus (-18)?
Last Answer : 20
Description : For what value of m will the expression 3x^3 + mx^2 + 4x – 4m be divisible by x + 2 ? -Maths 9th
Last Answer : f(x) = 3x3 + mx2 + 4x – 4m f(x) is divisible by (x + 2) if f(–2) = 0 Now f(–2) = 3(–2)3 + m(–2)2 + 4(–2) – 4m = – 24 + 4m – ... ; 4m = – 32 ≠ 0 ∴ No such value of m exists for which (x + 2) is a factor of the given expression
Description : For what value of k, will the expression (3x^3 – kx^2 + 4x + 16) be divisible by (x – k/2) ? -Maths 9th
Last Answer : Given f(x) = 3x³ - kx² + 4x + 16. Since (x - k/2) is a factor of polynomial. This means x = k/2 is the zero of the given polynomial. ⇒ f(k/2) = 3(k/2)³ - k(k/2)² + 4(k/2) + 16 ⇒ 0 ... - 4k + 32) + 4(k² - 4k + 32) ⇒ 0 = (k + 4)(k² - 4k + 32) ⇒ k = -4.
Description : What is the least value of the expression 2 log10x – logx (1/100) for x > 1 ? -Maths 9th
Last Answer : answer:
Description : What is the Value of the expression 57.9 x 0.086?
Last Answer : 57.9 times 0.086 is 4.9794, or 4 and 4897/5000 in fractionform.
Description : What would happen to X in this expression: X += 15; (assuming the value of X is 5)
Last Answer : X +=15 is a short method of writing X = X + 15, so if the initial value of X is 5, then 5 + 15 = 20.
Description : What value/s can x take in the expression k(x – 10) (x + 10) = 0 where k is any real number. (a) 100, -100 (b) Infinitely many (c) Depends on value of k (d) 10, -10
Last Answer : (d) 10, -10
Description : If (x, y) is a solution of the following pair of linear equations in two variables, then the value of expression (√ is: x + 2y = 4 and 3x - y = 5 (a) 2 (b) 3 (c) 4 (d) √2
Last Answer : (a) 2
Description : A Boolean operator Ө is defined as follows: 1Ө1=1, 1Ө0=0, 0Ө1=0 and 0Ө0=1 What will be the truth value of the expression (xӨy)Өz = xӨ(yӨz)? (A) Always false (B) Always true (C) Sometimes true (D) True when x, y, z are all true
Last Answer : (B) Always true
Description : In an apocalyptic event scenario that didn't destroy any existing infrastructure, what items go up in value, what items lose value, and what items stay the same?
Last Answer : Does existing count
Description : A man moevs with p km/h speed for 20 minutes and q km/h for next 30 minutes. Find the expression for this average speed in km/h.
Last Answer : A man moevs with p km/h speed for 20 minutes and q km/h for next 30 minutes. Find the expression for this average speed in km/h.
Description : What would be a more reasonable estimate for the expression in exercise 20?
Last Answer : Need answer
Description : Which of the following is an expression for the Stribeck equation? (Number of balls=z) (a) C=kd2z/5 (b) C=kd2z/10 (c) C=kd2z/15 (d) C=kd2z/20
Last Answer : (a) C=kd2z/5