The dicynodonts survived the mass extinction that was most closely correlated in time, if not in cause, with

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#Question id: 444

#1. Molecules and their Interaction Relevant to Biology

Which of the following is not a factor contributing to the large free energy of hydrolysis of ATP?

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#Question id: 10586

#10. Ecological Principles

Which of the following factors may not change carrying capacity over time?

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#Question id: 11919

#10. Ecological Principles

Frequent disturbances could lead to failure of a community to reach a climax community as one seral stage keeps replacing itself, a condition known as

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#Question id: 16476

#12. Applied Biology

Which type of cultures can be used for cells which do not have cell to cell communication

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#Question id: 16118

#7. System Physiology – Animal

Following statements are regarding to the heat production by the activation of sympathetic nervous system.

A. Activation is stimulation of β receptors in brown fat, which increases metabolic rate and heat production.

B. Activation is stimulation of α2 receptors in brown fat, which increases metabolic rate and heat production.

C. Stimulation of α1 receptors in vascular smooth muscle of skin blood vessels, producing vasoconstriction. Vasoconstriction reduces blood flow to the surface of the skin.

D. Stimulation of α1 receptors in vascular smooth muscle of skin blood vessels, producing vasodilation. Vasodilation reduces blood flow to the surface of the skin.

Which of the following combination is correct?