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Degger [83]
3 years ago
9

What is the negative control and positive control in a presumptive blood test?

Biology
1 answer:
gulaghasi [49]3 years ago
6 0

Answer:

Test a known bloodstain as a positive control and a blank (filter paper) as a negative control (see interpretation of results to determine a positive and negative result).

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What is the name for a group of individuals of the same species living
vladimir2022 [97]

Answer:

B: Population

Explanation:

Population is the number of people (well species) living in the same area at the same time.

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3 years ago
Explain this diagram?????????​
Simora [160]

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the diagram explains the process of DNA digestion and DNA ligation, which is usually used in molecular cloning techniques  

Explanation:

Molecular cloning can be defined as the process used to synthesize multiple copies of a particular DNA fragment. Molecular cloning requires the insertion of a foreign DNA fragment into an appropriate vector (e.g., a plasmid) through the action of specific enzymes that serve to cut and ligate DNA fragments. DNA digestion and DNA ligation use specific restriction enzymes and DNA ligases, respectively, in order to insert the foreign DNA fragment. For this purpose, restriction enzymes that generate single-stranded overhangs are preferred to create sticky ends which bind by complementary base pairing. Subsequently, a DNA ligase enzyme joins the DNA fragments together in order to create recombinant DNA molecules. DNA Ligation is often achieved by using a specific T4 DNA ligase, while there are many restriction enzymes that generate sticky-ends (e.g., BamHI, EcoRI, BaI228I, etc).

5 0
3 years ago
Someone please help me
Aleks [24]
I would pick H but it might be J but I am pretty sure it is H so go with that ok if you need any thing else I will help you ok
7 0
3 years ago
What is the meaning of the Greek word bios? life study environment nature
Lera25 [3.4K]

The greek root-word Bios means life

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3 years ago
Why are ammonite fossils found in the Himalayas?
sertanlavr [38]

Answer;

This is because most likely some time a ago there use to be Ammonites living there and as they died there, they got fossilized.

Explanation;

-Fossils of a marine animal called Ammonite are found in large numbers in the Kali Gandaki river in Nepal. Ammonites were sea animals having shells - either straight or coiled. When the Tethys sea disappeared, they were caught in the shale layers of clay and transformed into fossils. This is one of the proofs that the Himalayas were indeed once under water.

7 0
3 years ago
Read 2 more answers
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