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TLS Online TPP Program

#Question id: 5576

The polarity of a plant is established when ________.

#Unit 5. Developmental Biology

  1. cotyledons form at the shoot end of the embryo

  2. the shoot-root axis is established in the embryo

  3. the primary root breaks through the seed coat

  4. the shoot first breaks through the soil into the light as the seed germinates

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TLS Online TPP Program

#Question id: 13036

#Unit 13. Methods in Biology

In isoelectric focusing the protein will move until
TLS Online TPP Program

#Question id: 11988

#Unit 10. Ecological Principles

If mayflies lay eggs on roads instead of in water, this behavior could involve which of the following? 
TLS Online TPP Program

#Question id: 1079

#Unit 4. Cell Communication and Cell Signaling

Smoking impairs the ciliated cells of the middle portion of the respiratory tract. Many analgesic drugs (painkillers) impair peristalsis (the churning motion of the digestive tract). The result of either of these activities leads to an increased risk of infection in their respective areas. Why?
TLS Online TPP Program

#Question id: 1781

#Unit 4. Cell Communication and Cell Signaling

Binds C5b678 on host cells, blocking binding of C9 and the formation of the MAC complex
TLS Online TPP Program

#Question id: 12625

#Unit 6. System Physiology – Plant

Precursor of strigolactone biosynthesis  is___