Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 6357
TLS Online TPP Program

#Question id: 8851

Why is territoriality an adaptive behavior for songbirds maintaining populations at or near their carrying capacity?

#Unit 9. Diversity of Life Forms
  1. Songbirds expend a tremendous amount of energy defending territories so that they spend less time feeding their young and fledgling mortality increases.
  2. Only the fittest males defend territories and they attract the fittest females so the best genes are conveyed to the next generation.
  3. Songbird males defend territories commensurate with the size from which they can derive adequate resources for themselves, their mate, and their chicks.

  4. Many individuals are killed in the ritualistic conflicts that go along with territorial defense.

More Questions
TLS Online TPP Program

#Question id: 19707

#Unit 13. Methods in Biology

Currents caused by opening of which of the following channels contribute to the repolarization phase of the action potential ofventricular muscle fibers?
TLS Online TPP Program

#Question id: 19708

#Unit 13. Methods in Biology

In complete heart block
TLS Online TPP Program

#Question id: 19709

#Unit 3. Fundamental Processes

Following are statements related to the telomere related to the stability chromosome
a) protecting the ends of chromosomes from degradation 
b) preventing chromosomal end fusion
c) protect genome from nucleolytic degradation
d) provide a mechanism for their replication by semiconservative length maintenance 
choose the correct statement 
TLS Online TPP Program

#Question id: 19710

#Unit 3. Fundamental Processes

Telomeric sequences can be written in the general form 
TLS Online TPP Program

#Question id: 19711

#Unit 3. Fundamental Processes

Telomere are marker for the healthy cell, if the cell shows indefinite replication (embryonic or stem cell) the size of telomere lies between the range of  
TLS Online TPP Program

#Question id: 19712

#Unit 3. Fundamental Processes

Size of telomeric sequences are marker for the cell division and healthy cell,  Below some of the stages and sizes of telomere are given below

i. 3 – 20 kb (TTAGGG)n

a. cancerous cell

ii. less than 3 kb (TTAGGG)n

b. apoptotic cell death

iii. Ends with no (TTAGGG)n

c. limited replication

iv. Up to 55 kb of (TTAGGG)n

d. indefinite replication

Match them correctly