Ultrastructure
This structure within the cell serves as its control center, containing the cell's DNA.
What is the nucleus?
These are the primary structural components of cellular membranes, forming a bilayer.
What are phospholipids?
This theory states that all cells come from pre-existing cells.
What is the cell theory?
This type of cell division results in two genetically identical daughter cells.
What is mitosis?
Robert Hooke coined this term when he observed small box-like structures while looking at cork under a microscope.
What is cell?
This network of fibers helps to maintain the cell's shape, anchors organelles, and is involved in cell movement.
What is the cytoskeleton?
This process involves the movement of water across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration.
What is osmosis?
This model suggests that mitochondria and chloroplasts were once prokaryotic organisms absorbed into eukaryotic cells.
What is the endosymbiotic theory?
This stage of mitosis involves the alignment of chromosomes in the middle of the cell.
What is metaphase?
These short, hair-like structures protruding from the cell surface move fluid across the cell surface.
What is cilla?
This organelle is responsible for packaging and shipping proteins and lipids.
What is the golgi apparatus?
This term refers to the property of cell membranes that allows some substances to pass through while not others.
What is selective permeability?
This type of molecule, capable of self-replication, is believed to have been crucial in the early development of cellular life.
What is RNA?
This term is used to describe the process of one cell simply dividing into two.
What is binary fission?
These are the thread-like structures made of DNA and proteins found in the nucleus of most living cells.
What are chromosomes?
This type of endoplasmic reticulum lacks ribosomes and is involved in lipid synthesis.
What is the Smooth ER?
They proposed the 'protein sandwich' model for membrane structure.
Who is Davson-Danielli (James Frederic Danielli and Hugh Davson)?
This property of RNA molecules to act as both genetic material and as catalysts supports which hypothesis about the origin of life?
What is the RNA world hypothesis?
This specialized type of cell division reduces the chromosome number by half, creating four haploid cells from one diploid cell.
What is meiosis?
This type of lipid in the cell membrane helps to stabilize membrane fluidity in response to temperature changes.
What is cholestrol?
The inner membrane of this organelle is highly folded into structures called cristae.
What is the mitochondria?
This process describes how small vesicles fuse with the plasma membrane to release their contents to the exterior of the cell.
What is exocytosis?
This experiment demonstrated that organic molecules necessary for life could be synthesized from inorganic precursors under conditions thought to resemble those on early Earth.
What is the Miller-Urey experiment?
This stage of meiosis results in the separation of sister chromatids, unlike in mitosis.
What is anaphase II?
This process follows mitosis and is the division of the cytoplasm into two daughter cells.
What is cytokinesis?