After transcription begins, several steps must be completed before the fully processed mRNA is ready to be used as a template for protein synthesis on the ribosomes.
Which three statements correctly describe the processing that takes place before a mature mRNA exits the nucleus?
a. Noncoding sequences called introns are spliced out by molecular complexes called spliceosomes.
b. A cap consisting of a modified guanine nucleotide is added to the 5' end of the pre-mRNA.
c. Coding sequences called exons are spliced out by ribosomes.
d. A translation stop codon is added at the 3' end of the pre-mRNA.
e. A poly-A tail (50-250 adenine nucleotides) is added to the 3' end of the pre-mRNA.

Answers

Answer 1

Answer:

B

Explanation:

This may be rong, however I think this needs to happen before the mRNA can leave the nucleus. The cap helps prevent the mRNA from being destroyed by the cell itself once it leaves the nucleus.


Related Questions

Which of the following best describes how mitosis and meiosis result in daughter cells with different numbers of chromosomes?

Answers

Answer:

In Meiosis, cells are divided twice to the give haploid cells ( four cells) with half the number of chromosomes in the original cell, while in mitosis, cells only divide once to give identical cell with the same number of chromosomes as its origin.

Explanation:

Meiosis  is a process where a cell divides to give four cells, with the chromosomes half of that of the original cell. This cell division helps produce your genital cells like sperm and female egg. There are nine stages in meiosis.

Mitosis is a process of cell division where a single cell divides just once to produce two identical cells with the same number of chromosomes as the original cell.

Answer:

D. Mitosis produces two identical diploid daughter cells after one round of division. Meiosis produces four haploid daughter cells after two rounds of division.

Explanation:

(if this is the apclassroom one lol)

Fargga Ittal is 75 years old, and having some typical memory issues. She goes to explain this to her family, but cannot remember what was said. Help Fargo explain the typical memory process and failures at her age. (hint: this means a) explain the basic memory model of memory formation, b) explain where in that process and what things typically go wrong, c) which types of memory are most effected.)

Answers

Answer:

YEs sir

Explanation:

Data Center Energy Consumption

Modeling: A Survey

Miyuru Dayarathna, Yonggang Wen, Senior Member, IEEE, and Rui Fan

Comparing the body structures of organisms to find evidence of a shared evolutionary history is called ________.
A) outgroupingB) relativistic physiologyC) comparative anatomyD) analogous reconstruction

Answers

Answer:

The correct answer will be option-C

Explanation:

Comparative anatomy is the branch of study which studies anatomy or skeletal structure of the different species and comparing them to study the relationship between them.

The comparative anatomy is studied to study the evolutionary relationship between the different species which acts as evidence of the evolution. The study has distinguished the skeletal structure as homologous structures or analogous structure.

The correct answer will be option-C.

Final answer:

Comparative anatomy is the term for comparing body structures of organisms to find evidence of shared evolutionary history. It's an essential concept in evolutionary biology and provides evidence of common ancestry and evolutionary processes.

Explanation:

The term for comparing the body structures of organisms to find evidence of a shared evolutionary history is called comparative anatomy. This concept is vital in the field of evolutionary biology, where scientists examine the physical features of different organisms to establish common ancestors and track the process of evolution. For instance, the similar bone structures in the forelimbs of humans, bats, and whales suggest a common lineage, even though these limbs perform different functions in each organism.

Learn more about Comparative Anatomy here:

https://brainly.com/question/37399904

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The time period during which an organ is coming ""on-line"" during pre-natal development is referred to as the:________.

Answers

Answer:

Embryonic period

Explanation:

During Prenatal development, the development of an organism takes place in three stages  

1) Stage I – When the organism is at the stage I i.e the germinal stage a zygote is formed after a sperm fuses with an egg. The mass of cell move through the fallopian tube and gets embedded in the uterus wall. This process is called implantation.  

2) Stage II – In the second stage i.e Embryonic Stage major organs start developing and come in line. After this stage, the embryo is one inch long.  

3) Fetal stage – Sex organ, bone, muscle start forming.  

When would it be important for a scientific investigation to be replicated

Answers

Answer:

To check the accuracy of claims from the investigationsTo see if the outcome of the investigation is applicable to a variant populationTo see if there are gaps in the procedures or results that can provoke further investigations  

Explanation:

Replication is the reproducibility of results from scientific investigations. In order for the outcome of an investigation to be deemed correct, the outcome must be reproducible under somewhat similar conditions.

Replication of scientific investigation is important for a number of reasons:

To check the accuracy of claims from investigationsTo see if the outcome of a particular research is applicable to a variant populationTo see if there are gaps in the procedures or results that can provoke further investigations  
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