In cytokinin biosynthesis is the addition of the isopentenyl side chain from DMAPP to an adenosine moiety. The plant and bacterial IPT enzymes differ substrate used;

a) the bacterial enzyme utilizes AMP

b) the plant enzyme appears to utilize AMP

c) the bacterial enzyme utilizes both ADP and ATP

d) the plant enzyme appears to utilize both ADP and ATP

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#Question id: 10665

#Unit 10. Ecological Principles

Complete the following hypothetical life table of a species. 

Initial population size is 1000. What will be population size in next generation?

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#Question id: 1190

#Unit 4. Cell Communication and Cell Signaling

All genes regulated by PKA contain a cis-acting DNA sequence that binds to the phosphorylated form of a transcription factor called:

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#Question id: 9216

#Unit 9. Diversity of Life Forms

Which of the following criteria have to be met for a species to qualify as invasive?

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#Question id: 33472

#Unit 2. Cellular Organization

Find correct True and False statements

A. Human females have 23 different chromosomes, whereas human males have 24.

B. In the living cell, chromatin usually adopts the extended “beads-on-astring” form.

C. The four core histones are relatively small proteins with a very high proportion of positively charged amino acids; the positive charge helps the histones bind tightly to DNA, regardless of its nucleotide sequence.

D. Nucleosomes bind DNA so tightly that they cannot move from the positions where they are first assembled.

TLS Online TPP Program

#Question id: 573

#Unit 1. Molecules and their Interaction Relevant to Biology

How is trypsinogen converted to trypsin?