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Lelu [443]
2 years ago
15

Can someone help me

Biology
2 answers:
soldi70 [24.7K]2 years ago
5 0
Don’t copy in exam or u will suffer later
Yuri [45]2 years ago
5 0
Abiotic :non living
Biotic=living or once living
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Term referring to the process in which certain compounds increase in concentration within biotic tissues as they move up through
melisa1 [442]

Answer:

a. Biomagnification

Explanation:

Biomagnification is the name given to the progressive accumulation of substances from one trophic level to another along a food chain. Thus, the substance will have its highest concentration in individuals who occupy trophic levels furthest from producers.

For biomagnification to occur, substances must be fat soluble (lipid soluble) and thus adhere to living tissues. Another feature of substances that undergo biomagnification is that they are generally not biodegradable or metabolized by the body.

The phenomenon is quite common with heavy metals (lead; mercury) and certain chlorinated and aromatic organic compounds with higher molecular mass, such as the insecticide DDT.

3 0
3 years ago
Which step in the PCR program would you have to change if your fragment would have been 10 times longer and how?
bekas [8.4K]

Answer:

increasing extension time

Explanation:

The Polymerase Chain Reaction is a technique widely used in molecular biology laboratories to amplify target DNA regions. The standard steps of a PCR are as follow 1-denaturation, 2-annealing and 3-elongation/extension. These steps are repeated 15-40 times in order to exponentially amplify the linear DNA fragment. It is well known that longer extension times can be used as a strategy to increase the yield of longer PCR products. This is because the extension time depends on the synthesis rate of the DNA polymerase used in PCR technique and the length of the DNA fragment to be amplified.

7 0
3 years ago
Tell me what are the goals of the c19 vaccine?
WARRIOR [948]

Answer:

to prevent the virus to have a big effect on the body of humans so the cells can fight against it

6 0
2 years ago
Read 2 more answers
What do DNA and RNA code for?
sp2606 [1]

Answer:

The genome of an organism is inscribed in DNA, or in some viruses RNA. The portion of the genome that codes for a protein or an RNA is referred to as a gene. Those genes that code for proteins are composed of tri-nucleotide units called codons, each coding for a single amino acid.

Explanation:

6 0
3 years ago
Asap Please and thanks brainliest and thanks
GREYUIT [131]
Chicken breast-protein
Banana-carbohydrate
(Sorry if I’m wrong about the banana, most of my sources said carbohydrates)
7 0
3 years ago
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