Elton’s hypothesis suggests there is a linear correlation between species richness and community services

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#Id: 6603

#Unit 7. System Physiology – Animal

In the granulosa cells,

All the androgens and much of the progesterone

are converted into estrogens by the enzyme aromatase

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#Id: 5575

#Unit 7. System Physiology – Animal

Urea transporters UT-A1 and UT-A3 facilitate diffusion of urea out of the medullary collecting ducts while UT-A2 facilitates urea diffusion into the thin descending loop of Henle.

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#Id: 8233

#Unit 10. Ecological Principles

Populations of any species can grow at an incredibly rapid rate, given the right conditions.

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#Id: 6106

#Unit 3. Fundamental Processes

Thymine dimers cause mutations in two ways. (1) Dimers perturb the structure of DNA double helices and interfere with accurate DNA replication. (2) Errors occur during the cellular processes that repair defects in DNA, such as UV-induced thymine dimers To identify chemicals that are converted into mutagens in the liver, the Ames test treats potential indirect mutagens with a mixture of liver extract

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#Id: 2914

#Unit 3. Fundamental Processes

The protein single-strand binding protein (SSB) stabilizes the single-stranded DNA as it is formed and modulates the helicase activity.