Explain the direction in which the mRNA transcript is manufactured

1 answer:

3 0

The single-stranded DNA is revealed and ready for transcription as soon as the RNA polymerase and its related transcription elements are in place. Afterwards, RNA polymerase will begin to move down the DNA template strand in the 3' to 5' direction, and as it does so, it ties together interrelated nucleotides. This action makes a new strand of mRNA that is arranged in the 5' to 3' direction because of complementary base-pairing. More nucleotides are affixed to the mRNA as the RNA polymerase continues down the strand of DNA, therefore building a developing longer chain of nucleotides. Which is called elongation.

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Answer AND Explanation:

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Testes: they are oval shaped structures that produce the male gametes and sex hormone called testosterone.

Seminiferous tubules: tubules where spermatogenesis occurs.

Vas deferens: are tubules which lead to the epididymis.

Epididymis: is along, coiled tube for storage of sperms. it contraction and relaxation pushes sperms out and allows ejaculation through the urethra.

Accessory glands like the seminal vesicles, cowper's gland and prostate gland produce seminal fluid that provides a nutrient medium for sperms to swim in.

Scrotum: contains the testes outside the body.

FEMALES

Ovary: these are oval-shaped structures that produce female gametes and sex hormones.

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Uterus: has an inner layer called endometrium which becomes folded and vascularised to allow implantation. The endometrium nourishes the embryo..

Cervix: is a muscular ring between the uterus and the vagina. It secretes a plug of mucus, which prevents entry of pathogens and air

The vagina is a muscular copulatory canal into which penis enters. Vagina also allows passage of foetus during parturition.

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When particles spread out it is called

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When particles spread out it is called diffusion.

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