PAP 2023 Biology Fall Semester Exam

Front

What is the function of DNA Helicase?

Back

DNA Helicase is an enzyme that unwinds and unzips the DNA double helix during DNA replication.

Front

What is the significance of crossing over in meiosis?

Back

Crossing over increases genetic variation by exchanging genetic material between homologous chromosomes.

Front

What is the complementary DNA strand for 5'ATGCTCAGCTGA3'?

Back

3'TACGAGTCGACT5'.

Front

How is the DNA sequence GCTATA transcribed to mRNA?

Back

The mRNA sequence is CGAUAU.

Front

What is the role of the cell membrane?

Back

The cell membrane surrounds a cell, separates it from the outside environment, and controls which substances enter and leave.

Front

What is the definition of an enzyme?

Back

An enzyme is a biological catalyst that speeds up chemical reactions in living organisms.

Front

What is the process of transcription?

Back

Transcription is the process of copying a segment of DNA into RNA.

Front

What is the role of DNA Ligase?

Back

DNA Ligase is an enzyme that joins together DNA fragments during DNA replication and repair.

Front

What is genetic variation?

Back

Genetic variation refers to the differences in DNA sequences among individuals, which can lead to different traits.

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains deoxyribose sugar, while RNA is single-stranded and contains ribose sugar.