About 60% of natural conceptions fail to implant properly. One of the reasons may be the failure of the embryo to generate Trypsin, a chemical which induces a receptive environment in the uterus in order for the fetus to be implanted. The excess or lack of chromosomes of the fertilized egg may also be a factor in implantation failure. A weak immune system of the woman may also be an important factor.
Answer:
The correct answer is C. Kirby-Bauer test
Explanation:
Kirby-Bauer test is used to check the sensitivity of a particular bacteria towards an antimicrobial drug. So in this test, a pure culture of bacteria is isolated and its lawn is prepared on a suitable agar medium with the presence of discs of antibiotics that have known antibiotic amount.
Then the agar plate is incubated for appropriate time so that the bacteria can grow in the agar plate. After incubation, if the microbe is susceptible to antibiotic then a zone of inhibition will be seen where antibiotic growth is absent. More the zone of inhibition more will be the susceptibility of the bacteria towards that antibiotic.
So this test involves measuring and evaluating the zone of inhibition around antibiotic disc therefore the correct answer is C.
Answer:
The red color of the colonies is an example of <u>a phenotype .</u>
Explanation:
Serratia marcescens -
They are the species ,that are , gram - negative bacteria , rod - shaped ,
they are from the family of Enterobacteriaceae .
Serratia marcescens are mostly found in the urinary and respiratory tracts of the hospitalized adults and in children , in the gastrointestinal systems .
S. Mercescens are most commonly found in the environment , growing the bathroom and dirt .
It is gram-negative, produces a reddish - orange tripyrrole pigment called the prodigiosin , is an example of phenotype .
Answer:
Living things grow or develop.
Non-living things do not.
Answer:
1 Point
Which of the following terms describes a lipid molecule that has only single
bonds between its carbon atoms?
Explanation:
1 Point
Which of the following terms describes a lipid molecule that has only single
bonds between its carbon atoms?