There are two bags, one of which contains 5 red and 7 white balls and the other 3 red and 12 white balls. A ball is to be drawn from one or other of the two bags, find the chance of drawing a red ball.

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#Question id: 11217

#Unit 7. System Physiology – Animal

One-way synaptic transmission occurs because ________.

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#Question id: 18380

#Unit 12. Applied Biology

A commonly used municipal wastewater treatment to restart activated sludge bioreactors. Which technique is involved in this remediation process?

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#Question id: 53

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the number of times the DNA of a modern E. coli cell has been copied accurately since its earliest bacterial precursor cell arose about 3.5 billion years ago. Assume for simplicity that over this time period, E. coli has undergone, on average, one cell division every 12 hours (this is an overestimate for modern bacteria, but probably an underestimate for ancient bacteria).

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#Question id: 12248

#Unit 10. Ecological Principles

The graphs below show the survivorship and fecundity curves for two congeneric species, X and  Y, that are found in different habitats. Of the two species, Y is more likely to

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#Question id: 23777

#Unit 7. System Physiology – Animal

The area over the optic disk, which lacks the visual receptors, is known as