I believe this will help you.
http://www.nairaland.com/703151/why-did-islam-not-spread
Answer:
Option (A).
Explanation:
The muscle contains the different type of proteins that helps in the contraction of muscles and the movements of different body parts. The proteins are actin, myosin, nebulin and tropomyosin.
The binding of the troponin with the calcium result in the confrontational change. This twists the another protein tropomyosin. This helps in the exposure of the actin-myosin binding site. Later, the ATP acts as the main factor for the muscle contraction.
Thus, the correct answer is option (A).
Answer:
C. birds that use the trout as a source of food
Explanation:
Living organisms feed on one another in their natural environment in order to obtain energy for their various activities. According to this question, overfishing by humans decreases the population of trout living in a particular river.
This means that in that aquatic ecosystem (river), the population of organisms that feed on trout as a source of energy will also decrease. In this case, it is the birds. Hence, birds that use the trout as a source of food.
The 3 jobs done by the blood vessels cilia and mucus in the nasal cavity are to warm, moisten, and fill the air.
Answer: The correct ground-state electron configuration:
Explanation:
According to Aufbau rule :
The electron will first enter in the orbital with the lowest energy and after occupying the orbital with lower energy is goes top higher energy orbital.
The energy of the orbital is given by: (n+l)
For example: 1 s =(1+0) = 1, 2s = 2 + 0 = 2, 2p = 2 + 1= 3 etc.
So, the order of the orbitals with increase in energy is:
1s<2s< 2p<3s<3p <4s <3d<4p<5s<4d<5p<6s<4f< 5d<6p<7s<5f<6d<7p ....so on.
So, from the given option the correct ground-state electron configuration:
