TLS Online TPP Program

#Question id: 34531


Which of the following are true for positive chemotaxis in bacteria?

#XL - S Microbiology
  1. It leads to smooth swimming (runs) toward higher concentrations of attractants
  2. It increases the tumbling frequency to locate attractants
  3. Counterclockwise rotation of flagella is promoted
  4. The attractant binds to MCPs and decreases CheA autophosphorylation
More Questions
TLS Online TPP Program

#Question id: 14990

#XL - S Microbiology

Which smaller group of cells that crawl slowly along blood vessels, and that also  migrate into tissues in response to infection can differentiate into specific tissue macrophages ?

TLS Online TPP Program

#Question id: 14991

#XL - S Microbiology

_____I________in the bone, _____II_______in the central nervous system, and _____III_______in the lung and ____IV________in the liver are tissue-specific examples of macrophages with these properties.

TLS Online TPP Program

#Question id: 14993

#XL - S Microbiology

CD-56 marker found on ?

TLS Online TPP Program

#Question id: 14994

#XL - S Microbiology

The absence of MHC class I, which is expressed by almost all normal cells, but is specifically down-regulated by some tumors and in response to some viral infections, it will undergo apoptosis by

TLS Online TPP Program

#Question id: 14998

#XL - T Zoology

You set up a monohybrid cross between true breeding round winged and true breeding oval winged insects. Your F1 offspring have round wings, and you collect the following numbers of F2: Round wings: 302; Oval wings: 86. Which of the following statements is NOT correct?

TLS Online TPP Program

#Question id: 14999

#XL - T Zoology

I know that black coat color in mice is dominant to albino. Black mice get a higher price at the pet store so I am disappointed when I cross a black mouse with an albino mouse and get 6 albino and 2 black mice in the litter. I expected all black. What mistake did I make?