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andrey2020 [161]
4 years ago
6

Describe the difference between the messenger RNA transcript produce by rna polymerase in the nucleus and the mRNA transcript th

at binds to the ribosomal subunits in the endolplasimic reticulum.
Biology
1 answer:
cupoosta [38]4 years ago
7 0

Answer:

The mRNA transcript that is produced in the nucleus is in immature form, it had to get matured, and then its capping and tailing is done. 5' cap is added and a poly A tail is added at 3' end of this mRNA. This helps it to get matured. moreover for its maturation the non-coding regions (introns) are removed and exons are packed up again to form a mature mRNA.

This mature mRNA then proceeds to its way to the ribosomes for translation of proteins.

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What is the largest danger associated with a blood clot that’s lodged in a cerebral artery?
Ganezh [65]
Brain Ischemia which is definetly fatal as the cells of the cerebrum will start to respire anaerobically and eventually the building up of lactic acid will be fatal

5 0
3 years ago
Both Duchenne muscular dystrophy and color blindness are caused by recessive alleles. DMD, unlike color blindness, nearly always
Ronch [10]

Answer: Although both are X-linked recessive conditions, and therefore more likely in males, with the single X-chromosome. The recessive allele in colour blindness occurs at a higher frequency in the population and is a mild condition. Thus colour blindness does occur to a lesser extent in females because it needs the double recessive condition. DMD is a severe, disabling condition with a limited lifespan, and recessive allele frequency much lower, so the double recessive condition in females is very rare.

Explanation: DMD is an X-linked recessive, “nearly always in males” suggest that it also occurs due to a new mutation or some rare condition e.g. double recessive from an affected father and carrier mother, or inactivation of the normal gene in a heterozygote. It is also found that the defective allele is not completely recessive and that female carriers may exhibit mild to moderate effects.

colour blindness is polygenic, although the genes are all X-linked. It is more common in males than females. Females can carry two recessive alleles and so express the phenotype, but this is uncommon because the frequency of the recessive gene is low.

There are similarities in that both are X-linked recessives, therefore commonly expressed in males, who only have one X chromosome. The gene frequency of the colour blindness recessive is much higher than that of DMD, so the double recessive condition, which affects females, is more likely to be seen with colour blindness. In addition, DMD is a severe condition associated with disability and limited lifespan, which reduces the probability of mating between an affected male and carrier female

6 0
3 years ago
Which of the following best explains how the light reactions of photosynthesis generate ATP?
frutty [35]

Answer:

B. A proton gradient drives the formation of ATP from ADP and inorganic phosphate via ATP synthase.

Explanation:

Light reaction of photosynthesis includes the splitting of water in the presence of sunlight and electron transfer from PSII to PSI via an electron transport system. During the transfer of electron through cytochrome of the electron transport system, the proton concentration gradient is generated across thylakoids. The proton concentration gradient is harvested to drive ADP phosphorylation by the catalytic site of ATP synthase accompanied by downhill movement protons through its proton channels.

6 0
3 years ago
What can create biases in people, sometimes that we are unaware of?
ratelena [41]

Answer:

Views, opinions and ideas

Explanation:

Biases are created through that individual's specific Views, opinions, and ideas. As we grow up we develop unique views, opinions, and ideas based on the experiences we go through over the years that generate a strong feeling towards a specific subject/topic. This subconsciously creates biases that strongly influence future decisions when they even remotely connect with the subject/topic in question.

4 0
3 years ago
1. What changes occur, in reference to the circulatory system, when you exercise?
allsm [11]

Answer:

Exercise causes the heart to pump blood into the circulation more efficiently as a result of more forceful and efficient myocardial contractions, increased perfusion of tissues and organs with blood, and increased oxygen delivery.

Explanation:

7 0
3 years ago
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