Cell Structure and Cell Theory Quiz

Robert Hooke discovered and coined the term 'cell' while observing cork under a microscope.

Lysosomes contain enzymes for digestion and waste removal, playing a crucial role in cellular cleanup.

Ribosomes are the cellular structures where proteins are synthesized according to the instructions from DNA.

Smooth endoplasmic reticulum synthesizes lipids and detoxifies drugs, playing a role in cellular metabolism.

The cell membrane regulates the movement of substances into and out of the cell, maintaining cellular homeostasis.

The nucleolus is responsible for the synthesis and assembly of ribosomal RNA, essential for protein synthesis.

The statement 'All cells have a nucleus' contradicts the cell theory, which states that not all cells have a nucleus.

Mitochondria produce ATP through the process of cellular respiration, generating energy for the cell.

Prokaryotic cells lack a true nucleus and are characterized by their simpler structure.

Aristotle proposed the theory of spontaneous generation, believing life could arise from non-living matter, a concept later disproved.

The nucleus contains the cell's genetic material, including DNA, which regulates cellular functions.

Seymour Singer proposed the fluid mosaic model, describing the cell membrane's dynamic structure composed of proteins and lipids.

The cytoskeleton provides structural support, helps in cell motility, and maintains cell shape.

Plant cells contain chloroplasts where photosynthesis occurs, converting light energy into chemical energy.

Meiosis is the type of cell division that produces gametes (sperm and egg cells) with half the chromosome number of the parent cell.

Peroxisomes contain enzymes that break down fatty acids and amino acids, producing hydrogen peroxide as a byproduct.

Gap junctions facilitate communication and exchange of ions, nutrients, and small molecules between adjacent cells.