Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 31389
TLS Online TPP Program

#Question id: 12576

Estimates of current rates of extinction

#Unit 10. Ecological Principles
  1. Indicate that we  have reached a  state of  stable equilibrium  in  which  speciation and extinction rates are approximately equal.
  2. Suggest that one-half of all animal and plant species may be gone by the year 2100.
  3. Indicate that rates may be greater than the mass extinctions at the close of the Cretaceous period. 
  4. Indicate that only 1% of all of the species that have ever lived on Earth are still alive.
More Questions
TLS Online TPP Program

#Question id: 19328

#Unit 12. Applied Biology

Which one of the following is a bio microarray device?
TLS Online TPP Program

#Question id: 5735

#Unit 8. Inheritance Biology

Aneuploids may arise through nondisjunction, the failure of homologous chromosomes or sister chromatids to separate in meiosis. Following some statement are correct.

A)  Meiosis I non-disjunction leads to produce all gamete become aneuploidy

B) Meiosis II non-disjunction leads to produce half of gametes n+1 other half normal haploid

C) Meiosis I non-disjunction leads to produce half of gametes n+1 other half n-1

D) Either meiosis I or meiosis II non-disjunction leads to produce all aneuploidy gamete
TLS Online TPP Program

#Question id: 3005

#Unit 2. Cellular Organization

Which of the following statement are incorrect?
TLS Online TPP Program

#Question id: 567

#Unit 1. Molecules and their Interaction Relevant to Biology

Penicillin and related drugs inhibit the enzyme; this enzyme is produced by 
TLS Online TPP Program

#Question id: 5202

#Unit 11. Evolution and Behavior

Which of the following most correctly describes a shotgun technique for sequencing a genome?