Cell Theory
The most basic unit of life
What is a cell?
Spreading of molecules across a membrane until equilibrium is reached
What is simple diffusion?
Cells that are never differentiated.
What are embryonic stem cells?
Threadlike fibers that help give eukaryotic cells structure
What is the cytoskeleton?
Chromosomes condense and are visible as sister chromatids (in X’s).
What is prophase?
Made of cells which then make up organs
What is tissue?
Transport across the membrane with the aid of a transport protein with no extra energy.
What is facilitated diffusion?
The two purposes of cellular division.
What are growth and repair?
Surrounded by a nuclear envelope/membrane with pores that control what goes in and out
What is the nucleus?
Spindle fibers connect to the centromeres.
What is metaphase?
An organism composed of multiple cells
What is a multicellular organism?
Identical water to the cell's cytoplasm.
What is an isotonic solution?
The growth phase of the cell cycle.
What is interphase?
Located on Rough ER and floating in the cytoplasm
WHat are ribosomes?
1 cell becomes 2 identical daughter cells
What is mitosis?
Specialized structures that help a cell function
What are organelles?
Requires extra energy and a protein channel to be transported in and out of the cell.
What is a molecular pump?
The name for a duplicated pair homologous chromosomes
What are sister chromatids?
Processes, sorts, and ships proteins where needed
What is the Golgi apparatus?
Chromosomes decondense and start to look like chromatin again (threadlike instead of rodlike)
What is cytokinesis?
The process of cellular division within prokaryotic cells
What is binary fission?
Uses vesicles to export materials out of the cell.
What is exocytosis?
Where the cell is pinched into two equal parts during cytokinesis.
What is the cleavage furrow?
Appear during cell division and help cell divide by pulling chromosomes apart
What are centrioles?
Sister chromatids separate, pulling away from each other and becoming individual chromosomes.
What is anaphase?