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TLS Online TPP Program

#Question id: 15604

The bacteria which cause septicaemia are fast becoming resistant to the antibiotics used for controlling them. Which one of the following explanations fits best?

#XL - S Microbiology
  1. Each and every individual bacterium, in order to survive, develops a resistance to the antibiotic when exposed to it, and passes that resistance on to future generations.
  2. Only some bacteria, in order to survive, develop a resistance to the antibiotic when exposed to it, and pass that resistance on to future generations.
  3. A few bacteria have a natural heritable resistance to the antibiotic, so they survive when exposed to it, and pass that resistance on to future generations.
  4. All the bacteria have a natural heritable resistance to the antibiotic, so they survive when exposed to it, and pass that resistance on to future generations
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TLS Online TPP Program

#Question id: 4633

#XL - S Microbiology

Natural selection is based on all of the following except
TLS Online TPP Program

#Question id: 11278

#XL - R Botany

Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?

A) Oligotrophic lakes are less subject to oxygen depletion.

B) Rates of photosynthesis are lower in eutrophic lakes.

C) Eutrophic lake water contains higher concentrations of nutrients.

D)Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.
TLS Online TPP Program

#Question id: 8944

#XL - R Botany

Which two groups are most clearly represented in the Ediacaran fauna?
TLS Online TPP Program

#Question id: 15184

#XL - Q Biochemistry

Phenomenon of Electroendosmosis is largely applicable in
A. Gel Electrophoresis
B. PAGE
C. Free Solution
D. Capillary 
TLS Online TPP Program

#Question id: 4933

#XL - S Microbiology

What structure do protocells have in common with current cells?