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Cells becoming resistant to bacteria; Within a population of bacteria, NO cells are resistant to antibiotics. Over time, ALL cells are resistant to antibiotics. Outline the steps of natural selection that lead to a fully resistant population:

Within the bacterial population, the cells obtain different types of mutations. - One type of mutation is antibiotic resistance. - Some types of mutations are harmful to the cell, some have no or little effe...
ES
Answered by Emmaline S. • Biology tutor
2208 Views

How should I structure my personal statement?

In terms of actual structure, the classic one is just fine, Introduction, Main Body and Conclusion. However, there's a set of questions you should be able to respond to in each section. I do believe having a...
CB
2604 Views

ما هو نوع المصدر وقفة في عبارة: "و لعل وقفة أمام المسجد الأقصى"؟

مصدر مرة
HK
Answered by Helen K. • Arabic tutor
15525 Views

How many chromosomes dies each cell of the human body have ?

All human body cells have 23 pairs of chromosomes (46 total), 22 pair of autosomes and 1 pair of sex chromosomes. However, sperm and egg cells only have one set of chromosomes (23 total).
HK
Answered by Helen K. • Biology tutor
6588 Views

Please factorise and solve x^2 -1 = 0

using the method, what two numbers multiply to create -1 and add to make 0 -1 must be 1 x -1 therefore answer is (x+1)(x-1) - is it clear how the single x value is cancelled out? x^2 +x -1 -x = x^2 -1
LA
Answered by Laxmi A. • Maths tutor
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