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satela [25.4K]
2 years ago
12

To transform bacteria with plasmids, technicians first make the bacteria competent (capable of taking up DNA) by placing them in

calcium chloride and chilling them. Plasmid is then added to the competent bacteria and the plasmid/bacteria combination is taken through a few more steps to make the bacteria take up DNA. In your experiment, should you treat a tube of bacteria that you do not add plasmid to exactly as you do the tube of bacteria that you will transform:
Biology
1 answer:
Fantom [35]2 years ago
5 0

Explanation:

The Plasmid is known as a genetic structures present in a cell that can be replicated independently of the chromosomes. Bacteria can take up from the foreign DNA in a process is known as the transformation.

This experiment helps to give control demonstrating that the arc (antibiotic-resistance colonies) which occurs on the plate is known as a result of the Plasmid which is taken up by the cells. If there is no Plasmid, then there should be no growth present on the antibiotic plates.

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Answer:

a. Mammalia

Explanation:

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So, the above species which has a single duct for reproductive, excretory, and defecatory material as well as a lack of true nipples does not belong to Mammalia

4 0
2 years ago
"46. The largest number of neurons within the brain and spinal cord are _____; they are responsible for the central nervous syst
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Answer:

INTERNEUTRONS

Explanation:

INTERNEUTRONS

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3 years ago
Explain how the independent alignment of homologs, and also crossing-over during the first meiotic division, each contribute to
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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>

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3 years ago
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The answer is it provides us with vitamins. Hope this helps.
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3 years ago
If you were a frog, in which part of a lake would you most likely live?
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Answer: B. littoral zone

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2 years ago
Read 2 more answers
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