هنا تجد المتعة والتسلية والتفكير الشيق لحل مشكلة محلية ذات علاقة بالأحياء الدقيقة الطبية – الوحدة 5- وكذلك الحصول على درجات عالية في المقرر
شاهد المقطع أدناه بخصوص تكاثر البكتيريا ، ثم أجب على الأسئلة التالية في خانة التفاعل اخر الصفحة – باللغة الإنجليزية طبعاَ
Watch the video below describing bacterial growth – then answer the following questions: 1) what is the doubling time for the described bacteria in the video?, 2) what is logarithmic growth?, 3) If a tube is half full with the bacteria depicted below, how many minutes will it take to full it up? 4) what is the growth rate of the population of Saudi Arabia? and what is our doubling time?.
د. محمد بن عبد الله آل قمبر 
Salam all dear students,
This is a mix of easy questions and a little not too easy questions.
Good Luck and Enjoy
Best Wishes
answers I can know
1) what is the doubling time for the described bacteria in the video?
20 minutes
2) what is logarithmic growth?
fast growth
3) If a tube is half full with the bacteria depicted below, how many minutes will it take to full it up?
20 minutes
4) what is the growth rate of the population of Saudi Arabia? and what is our doubling time?
2%
I do not know the doubling time
This is from 1/2 to full in one doubling time :-O
And yes Dear (Abdullah J).
the growth we call logarithmic means that the population grow not by simply adding a fixed number to the populations (like 1 mln per year) but it means the increase is increasing every year, that is, the extra addition every time is more than the one before. This is a very important concept ti understand.
Regards
Dear (محمد علي),
You picked all the low hanging fruits (answered all the easy questions)
Well done,
Hope the other students can think of the other ones
Regards
I learn but cannot write any thing here about doubling time in saudi?
This is for growth rate
https://www.google.com.sa/search?q=growth+rate+in+saudi&oq=growth+rate+in+saudi&aqs=chrome..69i57j69i60j69i65j69i61j69i60l2.3727j0j4&sourceid=chrome&es_sm=91&ie=UTF-8
I found the answer
Saudi doubling time: 23 years
http://www.populstat.info/Asia/saudiarg.htm
wow this mean after 23 years we are 50 million in saudi like egypt .
fast growth (logarithmic) in our country..50 million in 2037
Dear Students,
Well done, you have grasped an important concept through this exercise.
Regards,.
God help house minstry
الله يساعد وزارة الاسكان
This is another way>>
And this one:
Dear everyone,
This 9-minutes youtube lecture will answer the question in a way that you can remember and add to your understanding great depth. Please listen to it.
Regards
dear Dr Alqumer,
I learn much with this,
thank you
Welcome very much
This is very good practice
Hope you all enjoyed this riddle. You never know when you will need to use its answer again.
Best wishes and good luck for all your coming exams.
Regards