GATE Life Sciences Practice Quiz

Question 1

A culture of bacteria grows exponentially according to $N(t)=N_0e^{kt}$. If the population doubles in $3$ hours, the time required for the population to become $8N_0$ is

Accepted Answer

$9$ hours

Question 2

For an enzyme-catalysed reaction following Michaelis-Menten kinetics, the initial velocity is $v=\frac{V_{\max}[S]}{K_m+[S]}$. If $[S]=K_m$, then $v$ is equal to

Accepted Answer

$\frac{V_{\max}}{2}$

Question 3

Which one of the following statements correctly describes the role of a buffer solution?

Accepted Answer

It resists changes in $pH$ upon addition of small amounts of acid or base.

Question 4

A diploid organism has genotype $AaBb$, with the two genes assorting independently. On selfing, what fraction of the progeny is expected to show the dominant phenotype for both traits?

Accepted Answer

$\frac{9}{16}$

Question 5

For the reaction $A \rightarrow B$, the concentration of $A$ decreases from $100\,\mathrm{mM}$ to $25\,\mathrm{mM}$ in $20$ minutes. If the reaction is first order, the half-life is

Accepted Answer

$10$ minutes

GATE Life Sciences

Practice Quizzes

GATE Life Sciences Practice Quiz

Mendelian Inheritance Patterns Fundamentals | GATE Life Sciences