2024 Fall Semester Exam

Front

What is the active site of an enzyme?

Back

The active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction.

Front

What are products in a chemical reaction?

Back

Products are the substances that are formed as a result of a chemical reaction.

Front

What is the complementary DNA strand for ATCGAG?

Back

The complementary DNA strand is TAGCTC.

Front

What is the complementary mRNA sequence for the DNA strand AACTGAA?

Back

The complementary mRNA sequence is UUGACUU.

Front

What forms the backbone of the DNA ladder?

Back

The backbone of the DNA ladder is formed by deoxyribose (sugar) and phosphate.

Front

Define DNA replication.

Back

DNA replication is the process by which a cell makes an exact copy of its DNA before cell division.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed in the process.

Front

What is a substrate in the context of enzyme activity?

Back

A substrate is the reactant molecule upon which an enzyme acts.

Front

Explain the term 'complementary base pairing' in DNA.

Back

Complementary base pairing refers to the specific pairing of nitrogenous bases in DNA: adenine with thymine (A-T) and cytosine with guanine (C-G).

Front

What is the significance of the phosphate group in DNA structure?

Back

The phosphate group links the deoxyribose sugars of adjacent nucleotides, forming the DNA backbone.