Practice Questions

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#Question id: 1020

HIV/AIDS can be categorized as a new or emerging infectious disease. By putting it into this category, we are effectively saying that

#4. Cell Communication and Cell Signaling

this infection hasn't been observed in the human population prior to recent (approximately 50 years or sooner) outbreaks
this disease has been in susceptible populations for centuries, but has only recently achieved infection levels that became detectable.
the infectious agent is still evolving and changing, unlike with older, more established diseases such as plague or polio.
the disease has always been in susceptible populations and causing disease, but we lacked the technology to detect it.

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TLS Online TPP Program

#Question id: 16781

#13. Methods in Biology

At Dunkin Donuts the number of donut holes in a bag can vary. Help Donald find the mode. 12,10,10,10,13,12,11,13,10

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#Question id: 5539

#5. Developmental Biology

When does neurulation occur during human pregnancy?

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#Question id: 23159

#13. Methods in Biology

Rhodamine is a fluorescent dye which emits a colour?

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#Question id: 10569

#6. System Physiology – Plant

Plants that grow in saline environments, called

TLS Online TPP Program

#Question id: 750

#1. Molecules and their Interaction Relevant to Biology

In strong acid and at elevated temperatures, for example perchloric acid (HClO4) at more than 100°C, nucleic acids tend to: