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TLS Online TPP Program

#Question id: 2136

When a bacterium such as E. coli is shifted from a warmer growth temperature to a cooler growth temperature, it compensates by:

#XL - S Microbiology

  1. increasing its metabolic rate to generate more heat.

  2. putting longer-chain fatty acids into its membranes.

  3. putting more unsaturated fatty acids into its membranes.

  4. shifting from aerobic to anaerobic metabolism.

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TLS Online TPP Program

#Question id: 2196

#XL - Q Biochemistry

Substance X is a charged molecule of small molecular weight. It is found at higher concentrations outside of cells than inside. How might substance X enter cells?
TLS Online TPP Program

#Question id: 359

#XL - S Microbiology

What is the concentration of OH− in a solution with an H+ concentration of 1.3 × 10^−4 M?
TLS Online TPP Program

#Question id: 423

#XL - S Microbiology

The glycolytic pathway oxidizes glucose to two molecules of pyruvate and also produces a net of two molecules of ATP. ATP allosterically inhibits the enzyme, PFK-1, that catalyzes the third step of glycolysis. This is an example of ________.
TLS Online TPP Program

#Question id: 15752

#XL - S Microbiology

Match the following

Column I Column II
I. Auxin                     a. Somatic embryogenesis
II. Cytokinin              b. Root
III. GA3                      c. Continued growth
IV. Abscisic acid      d. Shoot
TLS Online TPP Program

#Question id: 20186

#XL - P Chemistry

In hydrogen atom, energy of first excited state is -3·4 eV. Find out the K.E. of the same orbit of hydrogen atom