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Sliva [168]
3 years ago
15

According to the cell theory, which structure contains cells?

Biology
1 answer:
Monica [59]3 years ago
8 0

Answer:

All Living Organisms

Explanation:

The unified cell theory states that: all living things are composed of one or more cells; the cell is the basic unit of life; and new cells arise from existing cells. Rudolf Virchow later made important contributions to this theory.

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What is the most appropriate method to prepare a sample of cheek cells for PCR?
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Answer:

Extraction of genomic DNA

Explanation:

Resuspend the cells(any number), smaller numbers also work, in 10-20 ul of TE buffer or milli Q water. boil for 5-10 min in a waterbath, quick chill, short spin. use the supernatant as a template for PCR.

If cells are very less, u can directly add cells to the PCR reaction without enzyme,boil for 5-10 min in a waterbath, let it cool slowly, short spin. Add enzyme to the supernatant and start the reaction at extension step followed by normal PCR reaction steps.

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2 years ago
Can somebody help me with my phycology
elena-s [515]
Yeah I can help with that
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What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source
Vladimir79 [104]

Answer:

B

Explanation:

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2 years ago
A eukaryotic gene contains 14 exons. Most of the transcripts from this gene contain all 14 exons, but some contain only 11 exons
WARRIOR [948]

Answer:

D. Alternative splicing is the mechanism that produce complexity in the genes by splicing some of the protein coding part (exons) of a genes

Explanation:

There are certain splicing enhancers sites present in Exons which facilitiates the binding of RNA binding protein specifically SR protein family rich in Serine and Arginine residues. This SR protein will help in splicing of exons.

The significance of this type of mechanism is the ability of a cell to produce an isoform of protein which have retain their function.

This mechanism also help is diversity or in short in evolution.

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2 years ago
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1 is A 2 is D 3 is B 4 is C

Explanation:

have a nice day!!

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