$A$ sequence of how many nucleotides in messenger $RNA$ makes a codon for an amino acid?

If $b$ and $c$ are the lengths of the segments of any focal chord of a parabola $y^2 = 4ax$,then the length of the semi-latus rectum is:

Which part of the body secretes the hormone secretin?

$A$ choke coil works on the principle of

Let $A$ and $B$ be two symmetric matrices of the same order. Then,the matrix $AB - BA$ is

$A$ small sphere carrying a charge $q$ is suspended by a string of length $L$ between two parallel plates. The time period of the pendulum is $T_0$. When the capacitor is charged,the time period changes to $T$. The ratio $T/T_0$ is equal to: