PAP 2023 Biology Fall Semester Exam

Front

What surrounds a cell and controls which substances enter and leave?

Back

Cell membrane.

Front

What determines differences in traits such as hair texture?

Back

The sequence of nucleotides in DNA.

Front

What type of cells have circular DNA not found within a nucleus?

Back

Prokaryotic cells.

Front

What are the matching pairs of chromosomes inherited from genetic parents called?

Back

Homologous chromosomes.

Front

What does the structure of DNA resemble?

Back

A twisted ladder.

Front

What is the function of the cell membrane?

Back

To separate the cell from the outside environment and control substance movement.

Front

What are the two main types of cells?

Back

Prokaryotic and Eukaryotic cells.

Front

What is the basic unit of heredity?

Back

Gene.

Front

What are chromosomes made of?

Back

DNA and proteins.

Front

What is the process by which cells divide to form new cells?

Back

Cell division.