MDCAT 2026 MCQs

RNA polymerase binds near a gene and builds an RNA strand.
It uses complementary ribonucleotides.

'Mine' is an independent possessive pronoun that can stand without a noun.
'My' would need to modify a following noun.

DNA polymerase extends a new strand using a template.
It adds nucleotides in the 5′ to 3′ direction.

RNA uses uracil instead of thymine.
Uracil pairs with adenine.

The plural subject 'students' requires the plural reflexive pronoun 'themselves.'
It shows that the students prepared their own persons.

Ligase seals breaks in the sugar-phosphate backbone.
It creates a continuous lagging strand.

RNA uses uracil instead of thymine.
Uracil pairs with adenine.

A pronoun after the preposition 'between' must be in the objective case.
Therefore, 'me' is correct.

Ligase seals breaks in the sugar-phosphate backbone.
It creates a continuous lagging strand.

The word modifies the verb phrase 'completed the task.'
An adverb such as 'carefully' is required to describe how it was done.

Ligase seals breaks in the sugar-phosphate backbone.
It creates a continuous lagging strand.

'Very' directly intensifies the adjective 'difficult.'
'Much' is not normally used before a positive-form adjective.