What is the immediate result once a signal molecule binds to a receptor protein-tyrosine kinase?
a. receptor dimerization
b. receptor trimerization
c. receptor denaturation
d. receptor polymerization
e. receptor hydrolysis
A
You might also like to view...
Several species of sea urchins may inhabit the same tide pool and their reproductive periods overlap. Although they practice external fertilization, they seldom interbreed because eggs produce chemicals that are only attractive to sperm of their own species. This is an example of a _________ barrier that _______________.
A. prezygotic; causes geographic isolation B. prezygotic; causes temporal isolation C. prezygotic; prevents gamete fusion D. postzygotic; prevents zygote fusion E. postzygotic; causes hybrid infertility
What type of neuron is responsible for carrying electrical signals AWAY from the CNS to elicit a response in the body?
A. sensory neuron B. glial cell C. interneuron D. motor neuron E. All of the answers are correct.
If you forget to water your favorite plant, all of the following will occur at a cellular level EXCEPT
A) turgor pressure will build up in the cell. B) osmosis will occur. C) the plasma membrane will shrink away from the cell wall. D) water will move out of the vacuoles by osmosis. E) water will move out of the cytosol by osmosis.
The last known population of Neanderthals lived as recently as ____ years ago.
A. 8,000 B. 18,000 C. 28,000 D. 38,000 E. 48,000