Yea I guess but it’s not that bad. Cute
Answer:
Earth takes in thermal energy from the Sun in a process called THERMAL RADIATION.
Sunlight strikes Earth's surface at different angles. This angle is called the angle of INCIDENCE.
Explanation:
It is thermal radiation because thermal radiation refer to process where electromagnetic waves are emitted from a body or matter whose temperature is higher than zero. The Earth take in thermal energy from the sun as a result of thermal radiation.
Angle of incidence is the angle between a ray of light and the surface of it's perpendicular direction. The sunlight strike the Earth surface at an angle called angle of incidence.
Your answer would be B. Organisms that produce quickly.
Please correct me if I'm wrong!! I'd be happy to fix it!! :)
Silk worms are an invasive species in the UK. They cover trees and kill them….. silk comes out of their butt and we call it silk thread. Silk thread is silk spun into thread, or silk worm pooo pooooooo
Answer:
Explanation:
A. Cancer cells are cancerous because they divide all the time. Normal cells stop dividing once there's enough of them but cancer cells divide when not required as well. Therefore, if Ras is mutated it will always be "on" which means it will activate the pathway which will lead to division of cells i.e. cells divide to multiply their numbers so more cells will be made. Normally, cells only multiply whne there's the growth factor present to activate the whole pathway, but since Ras is mutated it doesnt need the growth factor to activate the pathway, it automatically always activates the pathway even in absence of growth factor.
B. It is highly unlikely that the proposed drug will have a useful effect. This is because mutant Ras protein of this type behaves as though it is constantly "on". Ras acts downstream of the receptor, i.e. first you have the reception of growth factor in receptor, then the ras gets activated. However, the activating mutation makes its effect felt (Ras is activated no matter if there's a growth factor or not), which is why mutant Ras is always active and no longer dependent on the receptor for activation.
Therefore, blocking the ability of the receptor to dimerize and activate Ras will probably not have an effect on cells containing the mutant Ras protein as it does not inhibit the activity of mutated Ras protein.
(Check out the Ras/Ref/MEK/Erk pathway for better understanding of how significant role Ras protein plays in cell proliferation i.e. division)