Practice Questions

TLS Online TPP Program

#Question id: 1389

Why has C. elegans proven to be a useful model for understanding apoptosis?

#Unit 4. Cell Communication and Cell Signaling

C. elegans does not naturally use apoptosis, but can be induced to do so in the laboratory.
C. elegans undergoes a fixed and easy-to-visualize number of apoptotic events during its normal development.
C. elegans has large cells wherein apoptosis is easily observed without the aid of a microscope.
As C. elegans ages, its cells die progressively until the whole organism is dead.

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TLS Online TPP Program

#Question id: 19867

#Unit 13. Methods in Biology

Which of the following variants of PCR were devised to prevent non-specific amplification at low temperature?

TLS Online TPP Program

#Question id: 5741

#Unit 8. Inheritance Biology

In a mammal 2 Barr bodies are observed. How many X chromosomes does the organism have?

TLS Online TPP Program

#Question id: 20270

#Unit 7. System Physiology – Animal

Oxytocin is formed primarily in the paraventricular nuclei of the hypothalamus. Which of the following statement is FALSE regarding oxytocin?

TLS Online TPP Program

#Question id: 9209

#Unit 9. Diversity of Life Forms

Introduced species can have deleterious effects on biological communities by ________.

TLS Online TPP Program

#Question id: 12582

#Unit 10. Ecological Principles

Which of the following describes carbon dioxide, methane, and water vapor re-reflecting infrared radiation back toward Earth?