List of top Questions asked in TS PGECET- 2026

Which electron transport chain complex does not pump protons across the mitochondrial inner membrane?

Consider the following and choose the correct answer Assertion [A]: DNA replication is semiconservative in nature. Reason [R]: Each daughter DNA molecule contains one parental strand and one newly synthesized strand. The correct answer is

Enzyme responsible for transcription in prokaryotes?

What is the pH of \(0.01\ \mathrm{M}\) HCl?

Which buffer resists changes in pH most effectively?

Identify the checkpoint that controls entry into DNA replication

If a mammalian cell completes one cell cycle in \(24\) hours and the S phase lasts \(8\) hours, what fraction of the cell cycle is spent in S phase?

Which among the following is not a key component of signal transduction process?

Select the enzyme complex responsible for biological nitrogen fixation?

Identify the obligate intracellular microorganism?

Consider the following and choose the correct answer Assertion [A]: Tautomeric shifts in DNA bases are a source of spontaneous mutations. Reason [R]: Rare tautomeric forms have altered hydrogen-bonding patterns. The correct answer is

Consider the following and choose the correct answer Assertion [A]: B-DNA is the most stable and predominant form of DNA under physiological conditions. Reason [R]: B-DNA possesses major and minor grooves. The correct answer is

The site of light reactions of photosynthesis occurs on

What are the products of the light reaction utilized during the Calvin cycle?

Identify the following organism which is a symbiotic nitrogen fixer?

Which of the following yields the maximum ATP?

Consider the following and choose the correct answer Assertion [A]: Aerobic respiration is more efficient than anaerobic respiration. Reason [R]: Oxygen allows complete oxidation of glucose. The correct answer is

Which of the following cellular components is present in eukaryotic cells but absent in prokaryotic cells?

A bacterium has a generation time of \(30\) minutes. Starting with \(1\times10^4\) (\(10000\)) cells, how many cells will be present after \(2\) hours?

Which of the following correctly matches a virus with its type of nucleic acid?

Viruses are considered as living organisms because they perform

A multistep method used to solve differential equations is

Origin of replication usually contains

If \(y_1,\;y_2\) are two dependent solutions of a second order linear homogeneous differential equation then \(y_1y_2'-y_2y_1'\) is

If \[ F(x)= \begin{cases} 0, & x[2mm] \left(\dfrac{x+7}{a}\right), & -7[2mm] 1, & x>7, \end{cases} \] represents the probability distribution function of a continuous random variable, then \(a=\)