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The population of a bacteria culture doubles every 2 minutes. Approximately how many minutes with it take for the population to grow from 1,000 to 500,000 bacteria?
A
10
B
12
C
14
D
18
Correct Answer:
18
500000 ব্যাকটেরিয়া তৈরি হতে প্রায় 18 মিনিট সময় লাগড়বে।
A certain population of bacteria doubles every 10 minutes. If the number of bacteria in the population initially was 104, what was the number of bacteria in the population 1 hour later?
A
2(104)
B
6(104)
C
(26) (104)
D
(106)(104)
Ahar culture, Kayatha culture, Malwa culture, Savalda culture, Jorwa culture, Prabas culture, Rangpur culture are all parts of:
A
Lower Paleolithic Cultures
B
Middle Paleolithic Cultures
C
Upper Paleolithic Cultures
D
Chalcolithic Cultures
Ahar culture, Kayatha culture, Malwa culture, Savalda culture, Jorwe culture, Prabhas culture, Rangpur culture are all :
A
Mesolithic cultures
B
Palaeolithic cultures
C
The Chalcolithic cultures of Ancient India
D
None of these
The population of grasshoppers doubles in a particular field each year .Approximately how many years will it take the population to grow from 2,000 grasshoppers to 1,000,000 or more?
A
8
B
9
C
10
D
11
The number of flights leaving a certain airport doubles during every one-hour period between its 9 am opening and noon; afternoon, the number of flights leaving from the airport doubles during every two-hour period. If 4 flights left from the airport between 9 am and 10 am, how many flights left the airport between 2 pm and 4 pm?
A
128
B
32
C
48
D
64
According to sociologist change in one dimension of a culture usually accompanies other transformations as well is called
1. Same culture
2. Culture traits
3. Culture
4. Culture change
Choose the correct answer
A
1 and 2
B
Only 4
C
4 and 1
D
Only 3
Which of the following statements is true about the characteristics of culture?
1. Culture is continuous.
2. Culture is accumulative.
3. Culture is linked with society.
4. Culture is changing.
Choose the correct answer
A
1 and 2
B
3 and 4
C
1, 3 and 4
D
All of these
A bacteria gives birth to two new bacteria in each second and the life span of each bacteria is 5 seconds. The process of the reproduction is continuous until the death of the bacteria. initially there is one newly born bacteria at time t = 0, the find the total number of live bacteria just after 10 seconds :
A
$$\frac{{{3^{10}}}}{2}$$
B
3<sup>10</sup> - 2<sup>10</sup>
C
243 × (3<sup>5</sup> -1)
D
3<sup>10</sup> - 2<sup>5</sup>
E
None of these
It takes 30 days to fill a laboratory dish with bacteria, If the size of the bacteria doubles each days, how long will it take for the bacteria to fill one-----half of the dish?
A
10 days
B
15 days
C
24 days
D
29 days
Assertion (A): Change in every culture would ultimately effect change in the value system.
Reason (R): Every culture is a more or less integrated system of cultural goods. This integration creates a more or less integrated value system in that culture.
In the context of the above statements, which one of the following is correct?
A
Both A and R are true and R is the correct explanation of A
B
Both A and R are true but R is not a correct explanation of A
C
A is true but R is false
D
A is false but R is true