What is the DNA sequence (5ʹ → 3ʹ) determined in this gel sequenced by Sanger's methods? Assume the samples were applied near the top of the gel.

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#Question id: 11108

#Unit 7. System Physiology – Animal

The most important chemical stimuli leading to increased rate and depth of breathing is:

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#Question id: 10203

#Unit 6. System Physiology – Plant

Light-response curves of photosynthetic carbon fixation in sun and shade plants. Typically, shade plants have a low light compensation point and have lower maximum photosynthetic rates than sun plants this is because respiration rates in shade plants are very low; which of the following graph is correct?

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#Question id: 11333

#Unit 10. Ecological Principles

Small geographic areas with high concentrations of endemic species and a large number of endangered and threatened species are known as

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#Question id: 28798

#Unit 2. Cellular Organization

To nucleate the assembly of branched actin filaments, Arp2/3 needs to be activated by___

a) Formins protein

b) nucleation promoting factor (NPF)

c) actin-nucleating proteins (ANP) 

d) Act A protein

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#Question id: 4935

#Unit 11. Evolution and Behavior

Which gas was least abundant in Earthʹs early atmosphere, prior to 2 billion years ago?