Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 27605
TLS Online TPP Program

#Question id: 18904

Advantages of using short half-life isotopes

#Unit 13. Methods in Biology
  1. It will be easier and cheaper to dispose of
  2. High specific activity makes the experiments more sensitive.
  3. Lower doses likely (e.g., in diagnostic testing of human subjects)
  4. a, b, and c all
More Questions
TLS Online TPP Program

#Question id: 15726

#Unit 13. Methods in Biology

Tissues and cells cultured in a liquid medium produce culture of single cells and cells clumps of few to many cells
TLS Online TPP Program

#Question id: 8925

#Unit 9. Diversity of Life Forms

What is the probable sequence in which the following clades of animals originated, from earliest to most recent?
1. tetrapods
2. vertebrates
3. deuterostomes
4. amniotes
5. bilaterians
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: 8939

#Unit 9. Diversity of Life Forms

Cephalization is most closely associated with which of the following?
TLS Online TPP Program

#Question id: 9252

#Unit 9. Diversity of Life Forms

Which of these environmental factor(s) is/are the key determining factor(s) that control(s) the biotic structure of aquatic biomes?