Aurease test is used to identifymyobacterium tuberculosis because
a) m. tuberculosis produces urease.
b) some bacteria reduce nitrate ion.
c) urea accumulates during tuberculosis.
d) urease is a sign of tuberculosis.
e)m. bovis can cause tuberculosis.

each of the 46 original chromosomes splits into two daughter chromosomes, so there are two sets of 46 daughter chromosomes that end up in each cell. human cells have 46 chromosomes. each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere.

glacial erosion, the picking up and movement of earth beneath a glacier, is also referred to as plucking. erosion and transportation of individual pieces of bedrock, especially large "joint block occur as a result of this glacial erosion. plucking is type of erosion in which rocks become frozen into the bottom and sides of the glacier.as the glacier moves downhill it 'plucks' the rocks frozen into the glacier from the ground.