PLTW Principles of Biomedical Science - Midterm Review

Front

What is the base pairing rule in DNA?

Back

In DNA, Adenine (A) pairs with Thymine (T) and Cytosine (C) pairs with Guanine (G).

Front

What is the function of vacuoles in plant cells?

Back

Vacuoles hold/store water and other substances, helping maintain turgor pressure in plant cells.

Front

What is the role of the immune system?

Back

The immune system defends the body against pathogens and foreign substances.

Front

What system allows for movement of the body?

Back

The muscular system allows for movement by contracting and relaxing muscles.

Front

What organelle is known as the 'powerhouse' of the cell?

Back

The mitochondria are known as the 'powerhouse' of the cell because they produce ATP, the energy currency of the cell.

Front

What is the primary function of ribosomes?

Back

Ribosomes are responsible for protein synthesis in the cell.

Front

What is the role of the Endoplasmic Reticulum (ER)?

Back

The Endoplasmic Reticulum (ER) is involved in the synthesis of proteins (rough ER) and lipids (smooth ER).

Front

What is homeostasis?

Back

Homeostasis is the process by which living organisms maintain a stable internal environment despite external changes.

Front

What is the function of the nucleus in a cell?

Back

The nucleus houses the cell's genetic material (DNA) and controls cellular activities.

Front

What is the difference between prokaryotic and eukaryotic cells?

Back

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells have a nucleus and organelles.