Semester 1 Biology Final 2024

Front

What is a nonsense mutation?

Back

A mutation that introduces a premature stop codon in the protein sequence, leading to an incomplete protein.

Front

What is DNA replication?

Back

The process by which DNA makes an exact copy of itself, essential for cell division.

Front

In transcription, which base pairs with adenine in DNA?

Back

Uracil pairs with adenine in mRNA during transcription.

Front

What is the structure of DNA?

Back

DNA is double-stranded, composed of nucleotides, and contains genetic information.

Front

What elements are found in all four macromolecules?

Back

Carbon, hydrogen, and oxygen are present in carbohydrates, lipids, proteins, and nucleic acids.

Front

What is transcription?

Back

The process of copying a segment of DNA into RNA.

Front

What is the role of ribosomes in protein synthesis?

Back

Ribosomes are the sites where translation occurs, synthesizing proteins from mRNA.

Front

What are the four types of macromolecules?

Back

Carbohydrates, lipids, proteins, and nucleic acids.

Front

What is the function of enzymes?

Back

Enzymes are biological catalysts that speed up chemical reactions in the body.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil.