Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
If deprived of certain signals cells can sometimes undergo...
|
apoptosis
|
|
|
Cell signaling involves a messenger (ligand) which can be...
|
Small peptides, amino acids, derivatives of lipids, steroids, dissolved gases, nucleotides, etc.
|
|
|
Cell signaling, in addition to the messenger, also involves a receptor. How many genes are thought to be involved in the making of receptors?
|
1,500 and the number of receptors that can be created with that number of genes is greater than 1,500 because of alternative gene splicing and post-translational modifications
|
|
|
If a cell reacts rapidly to a signal what process is occurring?
|
Altered protein function
|
|
|
If a cell reacts slowly to a signal what process is occurring?
|
Gene activation and protein synthesis.
|
|
|
Direct cell-to-cell signaling occurs a lot during...
|
development
|
|
|
Short range cell signaling is referred to as?
|
Paracrine signaling
|
|
|
Long range cell signaling is referred to as?
|
Endocrine signaling
|
|
|
When a cell self-signals it is called?
|
Autocrine signaling
|
|
|
The same signal can affect different cells in different ways.
acetylcholine can... |
-make skeletal muscles contract
-salivary glands secrete -affect heart muscle contractions |
|
|
The two classes of cell receptors are?
|
Intracellular receptors
cell surface receptors |
|
|
Which of the two classes of cell receptors are more common?
|
cell surface receptors
|
|
|
Frequently the intracellular receptor is what?
|
A transcription factor.
|
|
|
What are the three stages in cell signaling?
|
1. reception
2. transduction (amplification) 3. response |
