Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 59456
TLS Online TPP Program

#Question id: 34082

Regarding Gram staining and bacterial cell wall characteristics, which statements are correct?

#XL - S Microbiology
  1. Crystal violet stains the thick peptidoglycan layer in Gram-positive bacteria
  2. The outer membrane of Gram-negative bacteria contains lipopolysaccharide (LPS)
  3. Teichoic acids are found in the outer membrane of Gram-negative bacteria
  4. Gram-negative bacteria retain the safranin counterstain
More Questions
TLS Online TPP Program

#Question id: 4807

#XL - T Zoology

Three incompletely link marker gene was found. There is a marker A gene present in middle. Cross between aaBBcc X AAbbCC to produce heterozygous were allowed test cross, which of the following test cross offspring should be least frequent?
TLS Online TPP Program

#Question id: 13077

#XL - S Microbiology

The DNA probes for RFLP may NOT be obtained from
TLS Online TPP Program

#Question id: 11088

#XL - T Zoology

At a fraternity party a 17-year-old male places a paper bag over his mouth and breathes in and out of the bag. As he continues to breathe into this bag, his rate of breathing continues to increase. Which of the following is responsible for the increased ventilation?
TLS Online TPP Program

#Question id: 112

#XL - Q Biochemistry

The major groups of lipids can be separated by silicic acid column chromatography by eluting with
TLS Online TPP Program

#Question id: 2188

#XL - S Microbiology

The relative proportion (by weight) of lipid and protein in a membrane: