Cell Structure and Tissues

Which one of the following is a characteristic of negative feedback loops in homeostasis?

Which type of bond involves the sharing of electrons between atoms?

Which organelle is responsible for the production of ATP, the energy currency of the cell?

Which subatomic particle is much lighter than protons and orbits around the nucleus at high speed?

What is the atomic number of an atom?

Which of the following is NOT a common function of all living things?

What is the definition of homeostasis?

What is the most common form of homeostatic regulation?

What do anatomical concepts include?

Which of the following processes is NOT a type of transport process in cells?

What is the function of microvilli in cells?

Which organelle is responsible for protein synthesis in cells?

What is the function of epithelial tissue in the body?

Cell Structure and Tissues

Enzymes catalyze reactions in cells, with substrates binding to the enzyme's active site.
The plasma membrane is extremely thin (6nm - 10nm) and composed of lipids, proteins, and carbohydrates.
Transport processes include diffusion, osmosis, facilitated diffusion, active transport, endocytosis, and exocytosis.
Osmotic flow is determined by the solute concentration, with isotonic, hypotonic, and hypertonic solutions affecting the cell's shape.
The nucleus is the control center of the cell and is surrounded by a double membrane called the nuclear envelope.
Microvilli are small projections of the plasma membrane that increase the surface area of cells.
Cilia are long extensions of the plasma membrane that can be motile or nonmotile, used for movement and sensing signals.
Ribosomes are responsible for protein synthesis and can be free or attached to the endoplasmic reticulum.
The endoplasmic reticulum is a network of intracellular membranes with functions such as synthesis, storage, transport, and detoxification.
Mitochondria provide energy for the cell through energy-producing reactions.
Tumors can be benign or malignant, with the latter spreading through invasion and metastasis.
Cellular differentiation occurs when specific genes are turned off, leading to the specialization of cells into different types and the formation of tissues.
Epithelial tissue covers external surfaces, connective tissue provides support, mucous and serous membranes line passageways and cavities, synovial membranes protect joints, muscle tissue allows for contraction, and nervous tissue transmits electrical impulses.

Test your knowledge on cell structure and tissues with this quiz. Learn about enzymes, plasma membrane, transport processes, nucleus, microvilli, cilia, ribosomes, endoplasmic reticulum, mitochondria, tumors, cellular differentiation, and different types of tissues.