Which of the following infections would not respond to antibiotic treatment?
Gonorrhoea
Measles
Diarrhoea
Tuberculosis
Correct answer is B
Measles is an infectious illness caused by the rubeola virus. It spreads either through direct contact with a person who has the virus or through droplets in the air. Measles is a highly contagious disease that can lead to life-threatening complications.
The others are caused by Bacteria which can be treated with antibiotics.
A population which exceeds its carrying capacity and then collapses is represented graphically as a?
bell shaped curve
skewed curve
s-shaped curve
linear curve
Correct answer is C
S-shaped growth curve(sigmoid growth curve): A pattern of growth in which, in a new environment, the population density of an organism increases slowly initially, in a positive acceleration phase, then increases rapidly, approaching an exponential growth rate but then declines in a negative acceleration phase until at zero growth rate the population stabilizes.
The order of primary succession by plants in a very dry habitat is?
xerophytes → mesophytes → shrub
mesophytes → xerophytes → shrub
mesophytes → shrub -> xerophytes
xerophytes → shrub → mesophytes
Correct answer is C
No explanation has been provided for this answer.
Find the value of x in the diagram
31o
35o
37o
41o
Correct answer is B
Sum of exterior angle of any polygon is 360o
(2x+5)o + 2xo + (x-20)o + xo + (3x+10)o + (x + 15)o = 360o; 10x = 350
x = 35
Find the value of x in 0.5x + 2.6 = 5x + 0.35
0.5
2
2.6
5
Correct answer is A
0.5x+2.6=5x+0.350.5x−5x=0.35−2.6−4.5x=−2.25x=−2.25−4.50.5