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#Question id: 5023


The origin of the craniates occurred at roughly the same time as the

#11. Evolution and Behavior
  1. origin of the Ediacaran fauna.

  2. Cambrian explosion.

  3. Permian extinctions.

  4. first invertebrates invaded land.


Answer:- Option(s): 2


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#Question id: 2269

#2. Cellular Organization

The rough ER is so named because it has an abundance of _______________ on it.

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#Question id: 9235

#9. Diversity of Life Forms

Agricultural lands frequently require nutrient augmentation because ________.

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#Question id: 5325

#8. Inheritance Biology

Cystic fibrosis is caused by a recessive lethal gene and can be detected by an excess concentration of chloride in sweat. A normal man whose sister has cystic fibrosis, his normal wife whose brother has cystic fibrosis. What is chance of cystic fibrosis in their child?

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#Question id: 23405

#Aptitude

Children should avoid smoking because

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#Question id: 1422

#4. Cell Communication and Cell Signaling

In cells that have been signaled to die via TNF-a receptor signaling but lack caspase-8 activity:

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