Signal Transduction Pathway
What are the four types of Signal Transduction Pathways?
Autocrine, Juxtacrine, Paracrine, and Endocrine.
Define: Negative feedback loop
If levels get too high, then the cell will try to minimize them.
How many chromosomes are present in cells after Mitosis?
46
When does Crossing Over occur?
Prophase 1
What is the capital of Vermont?
Montpelier
What is the long-distance Signal transduction Pathway?
Endocrine
What is an example of a positive feedback loop?
Childbirth
In which stage are chromosomes pulled apart by motor proteins?
Anaphase
What is it called when chromosomes fail to separate?
Nondisjunction
What does DNA stand for?
Deoxyribose Nucleic Acid
What are the 3 stages of cell signaling?
Reception, Transduction, and Response
What are examples of negative feedback loops?
Low blood sugar, thermal regulation
In telophase what organelle is reformed?
The Nucleus
How many chromosomes do Haploid cells have and why is this important?
Haploid cells have 23 chromosomes, this is important so the number of chromosomes doesn't double each generation.
What process does this picture show?
Meiosis
Why can steroid hormones pass through the membrane to intracellular receptors?
They are nonpolar and lipid-soluble
Define: Feedback loop
Each has a target point, and the body attempts to maintain this point.
What are the purposes of Spindle Fibers during Metaphase?
They attach to the chromosomes and attach to them so that they can separate properly.
How many sperm and egg cells are created for each cycle of Meiosis?
4 sperm cells or 1 egg cell.
What type of cell signaling is this?
Paracrine
What nickname does the G-protein linked receptor have?
The on and off switch.
Define: Homeostasis
Internal environment that wants to remain stable, uses a feedback loop to do so.
What specific things happen during Prophase?
Chromatin condenses, Spindle fibers are formed, the nuclear membrane breaks down, and the nucleus disappears.
What is different about Telophase and Cytokenesis in Meiosis 2?
4 haploid cells are created and sperm/egg are created.
How many bones are in the human body?
206