Practice Questions

TLS Online TPP Program

#Question id: 9185

Plants are affected by an array of pathogens. Which of the following is a plant defense against disease?

#Unit 9. Diversity of Life Forms

cells near the point of infection destroying themselves to prevent the spread of the infection
production of chemicals that kill pathogens
acquiring gene-for-gene recognition that allows specific proteins to interact so that the plant can produce defenses against the pathogen
All of the above are plant defenses against disease.

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TLS Online TPP Program

#Question id: 5844

#Unit 8. Inheritance Biology

In homologous genetic recombination, RecA protein is involved in:

TLS Online TPP Program

#Question id: 22023

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct equation for Haldane reversible reaction

TLS Online TPP Program

#Question id: 26895

#Unit 10. Ecological Principles

Which factor is important in maintaining some grassland and shrub climax communities?

TLS Online TPP Program

#Question id: 4156

#Unit 3. Fundamental Processes

The reading frame of DNA is fixed by

TLS Online TPP Program

#Question id: 23839

#Unit 2. Cellular Organization

Which of the following myosin molecule have 2 heads, but does not assemble into filaments?