Mitosis
What is the division of the genetic material in the nucleus?
Mitosis
What is a ligand?
A chemical messenger that elicits a specific response in a receptor cell.
What's the function of the cellular membrane
Provides protection for a cell
What is meiosis?
The division of a single diploid nucleus into four haploid daughter nuclei
What is homeostasis?
Homeostasis is the maintenance of a stable internal environment
If a cell goes through cell division 4 times how many cells are there?
16
What is the function of a signaling cascade?
To relay and amplify a signal received by a cell.
what does the cellular membrane transport out of the cell
toxic substances
What are the two main phases in the Cell Cycle?
Interphase and M-Phase
What are used to maintain homeostasis by increasing or decreasing a cellular response to an event?
Feedback mechanisms
What are the 3 things mitosis is needed for?
Tissue Repair, cell growth, and asexual reproduction.
What is quorum sensing?
A signaling mechanism used in bacteria.
What is selective permeability?
The ability of the plasma membrane to allow some substances to cross it more easily than others.
Cytokinesis begins during this phase of the cell cycle?
Telophase
Why are negative feedback responses needed for homeostasis?
Negative feedback is needed to return the system back to its original system in case of a disruption.
What are kinetochores?
Protein complexes that assemble on sections of DNA at centromeres
What kind of signals do cells use to communicate over long and short distances?
Chemical Signals
What are the four major components of the cellular membrane?
phospholipids, proteins, carbohydrates, lipids
Spindle Fibers align the chromosomes across the center of the cell in this phase of the Cell Cycle?
Metaphase
How do negative feedback mechanisms maintain homeostasis?
By regulating physiological processes
What are the five stages of mitosis?
Prophase, Prometaphase, Metaphase, Anaphase, Telophase
What are the 3 stages of cell communication?
Reception, Transduction, Response
What does the phospholipid bilayer do?
It acts as a stable boundary between two aqueous compartments and allows the cell to be selectively permeable.
What is the cleavage furrow?
The first sign of cytokinesis during cell division in an animal cell, a shallow groove in the cell surface.
How do positive mechanisms maintain homeostasis?
Amplify responses and processes in biological organisms.