Practice Questions

TLS Online TPP Program

#Question id: 13022

A certain species of pine tree survives only in scattered locations at elevations above 2,800 m in the western United States. To understand why this tree grows only in these specific places an ecologist should

#Unit 10. Ecological Principles

Conclude that lower elevations are limiting to the survival of this species.
Study the anatomy and physiology of this species.
Investigate the various biotic and abiotic factors that are unique to high altitude.
Analyze the soils found in the vicinity of these trees, looking for unique chemicals that may support their growth.

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TLS Online TPP Program

#Question id: 15459

#Unit 2. Cellular Organization

In the growth curve of a bacteria population, the bacteria are rapidly increasing in number in the

TLS Online TPP Program

#Question id: 15460

#Unit 2. Cellular Organization

During which phase of growth are bacteria most susceptible to antibiotics?

TLS Online TPP Program

#Question id: 15461

#Unit 2. Cellular Organization

When doing experiments with bacteria,

TLS Online TPP Program

#Question id: 15476

#Unit 12. Applied Biology

Industrial production of amino acids are done because they are used extensively in the

1. flavor enhancers

3. nutritional supplements

4. feed additives

Choose the most appropriate option

TLS Online TPP Program

#Question id: 15477

#Unit 12. Applied Biology

Why these metabolites are manufactured by microbial fermentation rather than chemical synthesis

TLS Online TPP Program

#Question id: 15478

#Unit 12. Applied Biology

Escherichia coli preferentially utilizes glucose by preventing the uptake of lactose and switching off transcription of the lac operon. This mechanism is known as