Top answers

Describe the five stages of phagocytosis of a bacterium by a neutrophil

Attraction of phagocyte (neutrophil), towards the bacterium 2) Neutrophil engulfs the pathogen, forming a phagosome3) Formation of lysosomes which are attracted to the phagosome4) Binding of lysosomes to the...
MB
Answered by Mahesh B. • Biology tutor
4113 Views

A circle A has equation x^2+y^2-6x-14y+54=0. Find a) the coordinates of the centre of A, b) the radius of the circle A.

The standard equation of a circle is in the form (x-a)^2+(y-b)^2=r^2, where the coordinates of the centre of the circle is (a,b) and the radius of the circle is r. Therefore, you must put the given equation ...
EQ
Answered by Evelyn Q. • Maths tutor
5127 Views

Describe how HIV replicates in the human body

The HIV life style has 7 stages. The first is binding: HIV has glycoproteins embedded in the membrane that help it to bind to CD4 receptors on the surface of a human cell. Next, the HIV envelope and human ce...
MM
Answered by Maree M. • Biology tutor
9267 Views

Fossils can be found pyritised. Describe and explain how pyritisation occurs.

Pyritisation is the replacement of original material by iron pyrites. The environment needs to be anaerobic, where the only live organisms are sulfur bacteria. This bacteria will then use the sulfur in the e...
HG
Answered by Harriet G. • Geology tutor
5190 Views

Solve the following inequality: 2x^2 < x+3

2x 2 &lt; x+3, 2x 2 - x - 3 &lt; 0, (2x - 3) (x + 1) &lt; 0, Positive quadratic. Roots: x = -1 and x = 3/2, Therefore, x takes values greater than -1 and less than 3/2.
OM
4377 Views