Which polymerases are template-dependent, they incorporate nucleotides in a manner that is independent of base pairing

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#Question id: 20316

#Unit 7. System Physiology – Animal

Which of the following statements best describes Cushing's syndrome?

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#Question id: 12566

#Unit 10. Ecological Principles

Forests with a high density of native conifer trees are found in:

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#Question id: 7202

#Unit 5. Developmental Biology

Identify the correct match of the modes of regeneration (column I) with their definition (column II)

Column I	Column II
A. Stem cell-mediated regeneration	i. Through the re-patterning of existing tissues. There is often little new growth but rather cell death and a change in cell type (i.e., transdifferentiation into a different cell fate). This results in a rescaling of the whole organism as well as regeneration of the missing part.
B. Epimorphosis	ii. The differentiated cells divide but maintain their differentiated functions. The new cells do not come from stem cells, nor do they come from the dedifferentiation of adult cells.
C. Morphallaxis	iii. Adult structures can undergo dedifferentiation to form a relatively undifferentiated mass of cells (a blastema) that then redifferentiates during morphogenesis of the new structure.
D. Compensatory regeneration	iv. Stem cells allow an organism to regrow certain organs or tissues that have been lost.

 

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#Question id: 23072

#Unit 12. Applied Biology

_____________ bacterium can withstand the dosage of radiation, which are several times higher than what human cells can tolerate

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#Question id: 11405

#Unit 10. Ecological Principles

Vulnerability to extinction can be linked to species following characteristics. Which of the following statement are correct?

A. Endemism species are more prone to extinction than fragmented

B. Species that are capable of migrating between fragments of habitat, such as between mainland areas and islands, may be more resistant to extinction

C. Population variability species are less prone to extinct

D. Species with naturally long life spans may be more likely to become extinct