Practice Questions

TLS Online TPP Program

#Question id: 10794

Which one of the following characteristics of about lignin is incorrect?

#Unit 6. System Physiology – Plant

Most abundant organic substance in plants and a highly branched polymer of phenylpropanoid groups
lignins are involved in plant–animal interactions, helping to attract animals to flowers and fruit by providing visual and olfactory signals
lignin has significant protective functions in plants, Its physical toughness deters feeding by animals, and its chemical durability makes it relatively indigestible to herbivores
Lignin is generally formed from three different phenylpropanoid alcohols: coniferyl, coumaryl, and sinapyl, alcohols which are synthesized from phenylalanine

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TLS Online TPP Program

#Question id: 20332

#Unit 4. Cell Communication and Cell Signaling

What is LuxR and LuxI?

TLS Online TPP Program

#Question id: 19385

#Unit 12. Applied Biology

Which bacterium strain has CP4 has a glyphosate tolerant EPSPS enzyme. This EPSPS gene was transferred into soybean.

TLS Online TPP Program

#Question id: 18616

#Unit 13. Methods in Biology

In a PCR higher annealing temperature along with7-dcaza guanosine triphosphate (7-deaza OTP) used in place of GTP this indicate

TLS Online TPP Program

#Question id: 12451

#Unit 10. Ecological Principles

What type of population would be associated with a population pyramid that had an extremely broad base?

TLS Online TPP Program

#Question id: 583

#Unit 1. Molecules and their Interaction Relevant to Biology

When there are two substrates in a reaction, the reaction is said to be second order if ________.