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Yanka [14]
3 years ago
8

The PCR reaction mixture does not include: Group of answer choices DNA containing the sequence to be amplified. DNA ligase. all

four deoxynucleoside triphosphates. oligonucleotide primer(s). heat-stable DNA polymerase.
Biology
1 answer:
Anit [1.1K]3 years ago
4 0

Answer: DNA ligase.

Explanation:

Polymerase chain reaction is a technique used in molecular biology by scientists to make several copies of a DNA sample which enable them to take a smaller portions of it and expand it for more detailed study.

PCR mixture is premixed and contain thermostable DNA polymerase, oligonucleotides primer, four deoxynucleodide triphosphates, Magnesium chlorides, a propietary buffer.

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19.   Which of the following statements is correct in regard to apical and floral meristems? 
Butoxors [25]
The correct statement is D. APICAL MERISTEMS ARE SOMETIMES CHANGED INTO FLORAL MERISTEMS.

Apical Meristems are found in the tips of the roots and in the buds of the shoots. They supply cells for the plants to grow in length.

Apical Meristems are found in herbaceous plants, woody plants, grasses, and flowering plants.

In flowering plants, shoot apical meristem develops into an inflorescence meristem which produces the floral meristem. The floral meristem is responsible for the production of the sepals, petals, stamens, and carpels of the flower.
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3 years ago
Please help im having trouble with biology
shusha [124]
Okay, to start off, the basic difference between prokaryotic cells and eukaryotic cells is prokaryotic cells are cells without a nucleus, and eukaryotic cells are cells that contain a nucleus.

So based off that information alone, you can answer #1. Cell A does not have a nucleus (big circle shape), while Cell B does. Therefore, Cell A is the prokaryotic cell.

As for #2, prokaryotic cells and eukaryotic cells DO have similarities despite their differences. For instance, they both have some of the same organelles, like the plasma membrane, ribosomes, cytoplasm, and DNA.

Finally for #3, two differences are that #1, prokaryotic cells have nucleoids while eukaryotic cells have a nucleus, and #2, prokaryotes have circular DNA while eukaryotes have linear DNA. 

Your best bet is finding a visual aid in a textbook or online to help you, so you can better identify organelles and eukaryotic/prokaryotic cells. Also, there are some cheesy videos out there on YouTube which I was forced to sit through in Bio class last year such as the Amoeba Sister's youtube channel which could help. Hope this helped!

https://www.youtube.com/watch?v=ruBAHiij4EA
https://www.youtube.com/watch?v=8IlzKri08kk


7 0
3 years ago
How would results vary between observing a population directly as opposed to observing them indirectly?
ioda

Answer and Explanation:

Observing population directly gives you accurate result .

Direct observation does not need any intermediary as they themselves go for survey.

So, it is cost efficient.

Whereas indirect observing may involve manipulations.

It requires someone or many to hire who helps in surveying.

It incurs cost.

Thus, direct observation is always better than indirect observation.

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3 years ago
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"SCIENTIFIC" is the answer to this question,
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2 years ago
At which boundary does subduction stop occurring, resulting in a mountain range?
Vilka [71]
Continental boundary.
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3 years ago
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