Practice Questions

TLS Online TPP Program

#Question id: 12580

When levels of CO2 are experimentally increased, C3 plants generally respond with a greater increase in productivity than C4 plants. This is because

#Unit 10. Ecological Principles

C plants are more efficient in their use of CO2
C plants are able to obtain the same amount of CO2 by keeping their stomata open for shorter periods of time.
C4 plants don’t use CO2 as their source of carbon.
C3 plants are more limited than C4 plants by CO2 availability because of transpirational water loss.

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TLS Online TPP Program

#Question id: 9191

#Unit 9. Diversity of Life Forms

When an arborist prunes a limb off a valuable tree, he or she usually paints the cut surface. The primary purpose of the paint is to

TLS Online TPP Program

#Question id: 18896

#Unit 13. Methods in Biology

Negative Staining is used for examining.

TLS Online TPP Program

#Question id: 15768

#Unit 5. Developmental Biology

A stem cell has the power to produce many different types of differentiated cells. This phenomenon is known as

TLS Online TPP Program

#Question id: 11093

#Unit 7. System Physiology – Animal

The rate of O2 uptake by the breathing organ depends on the

TLS Online TPP Program

#Question id: 4321

#Unit 3. Fundamental Processes

A genetic test to detect predisposition to cancer would likely examine the APC gene for involvement in which type(s) of cancer?