QCM : Biology Fundamentals and Disease Mechanisms — 9 questions

Explication

Mitochondria are known as the powerhouses of the cell because their main function is to produce ATP through aerobic respiration, providing energy for cellular activities.

Explication

Mitochondria are known as the cell's powerhouses because they generate ATP through aerobic respiration, providing energy for cellular activities.

Explication

In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C) through specific hydrogen bonds, following the base pairing rules.

Explication

Transport proteins embedded in the phospholipid bilayer facilitate the controlled movement of substances in and out of the cell, aligning with the fluid mosaic model.

Explication

DNA replication occurs during the S (synthesis) phase of the cell cycle, where the cell duplicates its genetic material in preparation for division.

Explication

Gene expression involves transcription (DNA to mRNA) and translation (mRNA to protein), determining how genetic information results in functional proteins.

Explication

Bacteria are living organisms capable of independent life, while viruses are non-living entities that require a host cell to reproduce.

Explication

A shaded circle in a pedigree denotes an affected female, indicating she exhibits the trait being studied.

Explication

An algal bloom results from rapid algae proliferation, often due to excess nutrients, which can deplete oxygen in aquatic ecosystems, harming aquatic life.