In this mechanism enzyme dicer cuts DSRNA into smaller fragments called SIRNA which form a complex with RISC in degrees specific

1 answer:

7 0

I believe the correct answer is mRNA. Dicer is a part of RNase III which leaves double stranded RNA and pre-microRNA into short double stranded RNA fragments called small interfering RNA and microRNA respectively. The Dicer facilitates the activation of RNA induced silencing complex (RISC), which are essential for RNA interference. The RISC has a catalytic component argonate, which is an endonuclease capable of degrading mRNA. siRNAs are specfic to the mRNA sequence unlike miRNAs which are not completely complementary to the mRNA sequence.

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Which group is INCORRECTLY paired with its description?

amid [387]

Answer:

Red algae - acquired plastids by secondary endosymbiosis

Explanation:

Red algae are believed to have undergo a primary endosymbiosis event. Then a second endosymbiosis event created a large group known as heterokonts. During the primary endosymbiosis event red algae acquire their plastids.

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3 years ago

Which structure forms as DNA unwinds? A. a special marker B. a complementary base C. a replication bubble D. a double helix

kozerog [31]

A replication bubble forms as the DNA unwinds.

Option C

<u>Explanation</u>:

Replication bubble is the space where the strands of double helical DNA structure are separated with the help of DNA helicase. The strands of the double helical DNA are still in the helix form on the both end of the unwinded DNA stand which gives this region an appearance of a bubble.

DNA unwinding is the first step in replication or transcription of the DNA molecule. DNA helicase separates the two types of "DNA" that are connected by hydrogen bonds with the help of ATP hydrolysis.

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3 years ago

Which of the following white blood cells is not capable of phagocytosis?

denpristay [2]

Answer:

Lymphocytes

Explanation:

White blood cells ( leukocytes) is one of the formed elements of blood that provides immunity and protection against the pathogens. Different types of leukocytes are eosinophils, basophils, monocytes, lymphocytes and neutrophils.

Lymphocytes are B cells and T cells of the immune system. B cells produce antibodies against the antigen and T cells kills the harmful cells of the body. by specific cell determinants.These cells are not capable of phagocyte the pathogen.

Thus, the correct answer is option (A).

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3 years ago

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torisob [31]

Answer:

$\small\mathfrak\green{a.infectious \: disease} \\ \\ \small\mathfrak\purple{hope \: it \: helps...}$