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Sphinxa [80]
3 years ago
11

I would appreciate the help cuz i don't know​

Biology
1 answer:
spin [16.1K]3 years ago
8 0

Answer:

The answer is:

D. The population must be very large.

Hope that helps :)

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There are initially 1000 bacteria in a culture. The number of bacteria doubles each hour. The number of bacteria N present after
polet [3.4K]
There are several information's of immense importance already given in the question. Based on those information's the answer can be easily deduced. 
Initial number of bacteria in the culture = 1000
Number of bacteria after t hours = 1000 (2)^t
Then
1000 (2)^t = 50000
2 ^t = 50
t = 5.6

I hope the procedure is clear enough for you to understand.
3 0
3 years ago
Explain how the independent alignment of homologs, and also crossing-over during the first meiotic division, each contribute to
BartSMP [9]

Answer: Homologous chromosomes are randomly distributed to daughter cells, this means different chromosomes segregate independently of each other. And they exchange segments of DNA during crossing over. This recombination creates genetic diversity because genes from each parent are exchanged.

Explanation:

Meiosis is a type of cell division that produces gamete cells, which are sex cells (egg and sperm)

Chromosomes that form a pair and are found together are called homologous chromosomes, and they are inherited from each parent. During prophase of meiosis I, the homologous chromosomes exchange segments of DNA in a process called crossing over. This recombination creates genetic diversity because genes from each parent are exchanged. <u>It results in new combinations of genes on each chromosome.</u>

After that, during the anaphase of meiosis I, the two chromosomes line up on the equatorial plane of the cell. Then, they are separated and each will go to a new daughter cell. So homologous chromosomes are randomly distributed to daughter cells, <u>this means different chromosomes segregate independently of each other.</u>

3 0
3 years ago
HELP MEEEE PLS Hydroelectric power is produced using the energy of moving water.
Archy [21]

Answer:

C Water flowing downstream is held up in a reservoir behind a dam. Some water moves down channels through turbines connected to generators which produce electricity

Explanation:

Good explanation.

4 0
3 years ago
Read 2 more answers
The term osmolarity has been used to describe the total solute concentration of a solution (generally water), where 1 osmole (Os
arsen [322]

Answer:

osmolarity depends upon molarity.

glucose is a non-ionizing substance. it won't break down and will go as a whole.

osmolarity means the solute concentration of a solution.

here, the solvent is water.

therefore, 1 osmole = 1 mol

the ions of glucose after forming a solution (i) = 1

osmolarity = 1.5 M glucose × 1

                   = 1.5 osmoles of glucose.

7 0
3 years ago
Two European men and two Polynesian women settled on a previously uninhabited tropical island. All four of the settlers have bro
kati45 [8]

Answer:

Two European men and two Polynesian women settled on a previously uninhabited tropical island. All four of the settlers have brown eyes, a dominant trait, but one of the Europeans is heterozygous and carries the recessive gene for blue eyes.  No new settlers arrive,and nobody leaves the island.After a few generations,the percentage of blue-eyed individuals increases from the original zero to 25 percent.This is probably due to which of the following factors?

genetic drift

Explanation:

Genetic drift entails when there are changes in the gene frequency which occur in a gene that is existing. From the analogy above, it is a known fact that only gneetic drift could allow such to happen as mutation will only occur with a sudden change of gene which is not the case described above

3 0
3 years ago
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