Cell Biology

What happens after mRNA is translated into tRNA?

What happens after mRNA is translated into tRNA?

I know the steps before that, but when it gets to here, I'm a bit confused.

juliejjay   450   2 Replies

tommygirl5012

After transcription of DNA, where does processing of the initial mRNA transcript occur in the eukaryotic cell?

After transcription of DNA, where does processing of the initial mRNA transcript occur in the eukaryotic cell?

A) Processing occurs by RNA polymerase during the initial transcription process.  
 B) After transcription, enzymes process the mRNA transcript in the nucleus, removing introns.  
 C) After transcription and the mRNA transcript has been transported t

juliejusu   789   3 Replies

julie

How do ribosomes synthesize proteins by using tRNA to translate genetic information encoded in mRNA's?

How do ribosomes synthesize proteins by using tRNA to translate genetic information encoded in mRNA's?

How do ribosomes synthesize proteins by using tRNA to translate genetic information encoded in mRNA's?

juliejusu   617   2 Replies

julielpn74

Will you please correct me in my tRNA, mRNA and rRNA understanding?

Will you please correct me in my tRNA, mRNA and rRNA understanding?

My understanding is as follows. For eukaryotes, replication of DNA occurs in the nucleus. Then, mRNA leaves the nucleus and binds to rRNA where transcription occurs. So the amino acids are taken to the mRNA chain via tRNA and after several have been

juliejusu   505   3 Replies

DAVEMUSSO

Which one of the following is not a function of tRNA?

Which one of the following is not a function of tRNA?

A) joining to only one specific type of amino acid
B) recognizing the appropriate codons in mRNA
C) transferring nucleotides to rRNA
D) helping to translate codons into amino acids
E) All of the choices are functions of tRNA.

juliejusu   523   3 Replies

davesf4i

Nerve Impulse Transmission?

Nerve Impulse Transmission?

Can someone please explain how nerve impulses are transmitted from the stimulus of the brain and then back to the motor neuron for action? Or provide a link. I've read a few things and I'm still a little confused. Thank-you.

juliejusu   471   1 Reply

irina

What is the total yield of NADH + H+ from cellular respiration through the Krebs cycle for one glucose molecul?

What is the total yield of NADH + H+ from cellular respiration through the Krebs cycle for one glucose molecul?

What is the total yield of NADH + H+ from cellular respiration through the Krebs cycle for one glucose molecule?

julielpn74   411   1 Reply

juliejjay

In human females the primary oocytes remain arrested in prophase I for much of a persons life.?

In human females the primary oocytes remain arrested in prophase I for much of a persons life.?

How many mature ova will arise from each primary oocyte when meiosis is complete?

a) 0
b) 1
c) 2
d) 3
e) 4

julielpn74   430   1 Reply

bunnicorn711

what is the tRNA anitcodon of the DNA triplet GTA?

what is the tRNA anitcodon of the DNA triplet GTA?

For the DNA triplet GTA, write the complementary mRNA codon and the tRNA anticodon. What amino acid does this triplet represent?

julielpn74   286   2 Replies

DAvev

An initiator methionine-tRNA is positioned at the AUGstartcodon in order to start elongation in protein synth?

An initiator methionine-tRNA is positioned at the AUGstartcodon in order to start elongation in protein synth?

True or False? Would'nt mind if someone could elaborate a little on this too!

julielpn74   327   1 Reply

tomtom1

Sequence of activities during nerve impulse?

Sequence of activities during nerve impulse?

Activities during Impulse Transmission along a Neuron

   1.  Diffusion of ions
   2.  Release of acetylcholine
   3. An increase in the permeability of axon membrane
   4.  An increase in the use of ATP
   5. Release of cholinesterase
   6.Conduc

julielpn74   550   1 Reply

ilibee

Which of the following best describes the corticospinal pathway?

Which of the following best describes the corticospinal pathway?

A. is stimulatory to flexors
B. is involved  in modulation of sensory transmission
C. activates both alpha and gamma neurons directly and indirectly
D. is inhibitory to extensors
E. all of the above

Give your answer and explanation!

julielpn74   300   1 Reply

julie.t

What form does this 'chemical message' take?

What form does this 'chemical message' take?

When an AP reaches the terminal end of a neuron, it is converted from an electrical signal to a chemical message for synaptic transmission.

julielpn74   1584   1 Reply

julibugg

How long, in amino acids, would be a polypeptide produced in the translation of a 24-base mRNA molecule which?

How long, in amino acids, would be a polypeptide produced in the translation of a 24-base mRNA molecule which?

How long, in amino acids, would be a polypeptide produced in the translation of a 24-base mRNA molecule which begins with 'AUG' and ending with 'UAG'?

juliem   551   3 Replies

tommytoughnut

what is meant by the genetic code is universal and what two structures do tRNA's carry?

what is meant by the genetic code is universal and what two structures do tRNA's carry?

im stuck on these two thanks!
actually you can scratch the genetic code is universal question-i wrote the wrong one-i meant with what are the three steps involved in translation of mRNA?

juliem   416   2 Replies

midwestmama

How would retaining extra cytoplasm enhance survival of a developing oocyte?

How would retaining extra cytoplasm enhance survival of a developing oocyte?

How would retaining extra cytoplasm enhance survival of a developing oocyte?

Julieoct   3120   4 Replies

Elizabeth Krol

Do Helper T Cells activate or help activate cytoxic T cells and other cells?

Do Helper T Cells activate or help activate cytoxic T cells and other cells?

So in my immunology book it states that Helper T cells stimulate the activation of cytoxic t cells, b cells, and other helper t cells. It also says that these cells can get activated themselves through the standard MHC process. Do both methods activa

julies   375   1 Reply

michellexox

Neither a rock nor a virus can make food or change food into Energy.?

Neither a rock nor a virus can make food or change food into Energy.?

Explain why a virus is considered alive while a rock is not. (Hint: What can living things do that non-living things cannot?) And this is based off a book that was made in the 80's. In the book Pluto is still considered a planet.

julies   976   1 Reply

julielpn74

microbiology lab

microbiology lab

1)      Assume that you measure the OD of two E.coli cultures: culture A and culture B. The spectrophotometer gives you a reading of 2.2 for culture A and 0.02 for culture B. What would you do to determine the concentration of culture

junab   904   2 Replies

bio_man

How does acetic acid break down calcium phosphate?

How does acetic acid break down calcium phosphate?

So im doing a science project with the vinegar and chicken bone. The bone has gone rubbery after soaking in the solution. I understand the basic knowledge behind it. The acetic acid dissolves the mineral component of the bone and i have a chemical eq

Junior.   2992   1 Reply

tony960831

"How many moles of ions are released when 1.6 mol of calcium phosphate, is dissolved in water?"?

"How many moles of ions are released when 1.6 mol of calcium phosphate, is dissolved in water?"?

Hi guys this is one of my homework questions. I am wondering if anyone can help me do it? "How many moles of ions are released when 1.6 mol of calcium phosphate, is dissolved in water?"

Any help appreciated, thanks!

Junior.   555   1 Reply

junior123

How do you know DNA is a long polymer with a deoxyribose and phosphate backbone?

How do you know DNA is a long polymer with a deoxyribose and phosphate backbone?

And How do you know RNA is a polymer with a ribose and phosphate backbone? please  help!!!!!!!!!

Junior.   268   1 Reply

bunheads09

What is wrong regarding oogenesis?

What is wrong regarding oogenesis?

primary oocyte has a chromosomal number of 2n


Polar bodies are non-functional cells that result from the unequal division of cytoplasm.


All female oogonium are present at birth.


About every 28 days, a female releases primary oocyte into fallopi

Junior.   456   2 Replies

Juniordelor

What happens to the peptide after it is produced ?

What happens to the peptide after it is produced ?

Are there any other localization sequences in the cell? What are they and how do they work ?

junior123   468   3 Replies

nwolverton

How many tri-peptide sequences can be formed from these residues/?

How many tri-peptide sequences can be formed from these residues/?

Given residues: Glycine, Alanine and Phenylalanine.
Is there a mathematical expression that allows us to calculate the total number of Sequences?
Thanks, all help is appreciated.

junior26   269   1 Reply

Bungalo

Which is the purpose of human reproduction?

Which is the purpose of human reproduction?

A to continue the human species
 B to distinguish between sexes
 C to form strong marital bonds
 D to ensure the evolution of humans
7. Which is a result of the hormone testosterone?

 A female menstrual cycle
 B female pregnancy
 C male sperm

junior26   493   1 Reply

tony

What role does NADH and FADH play in aerobic respiration?

What role does NADH and FADH play in aerobic respiration?

Please help! My science teacher is making us write a report and i dont know!!!!! HELP PLEASE! THANKYOU!
Thankyou BenF! That was a lot of help! It didnt have to be too in depth so i used your info and got definitions of everything. Thanks again!

junior272   544   2 Replies

bugmenomore

Microbiology help

Microbiology help

Hi all,

I have an assignment to complete and need some help on it, so any help given will be appreciated. I am currently studying Microbiology and the question relates to food microbiology.

Basically i have to answer the followi

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junior272   9836   38 Replies

forrestlin

Inorganic vs Organic compounds?

Inorganic vs Organic compounds?

Compare inorganic and organic compounds.


Thanks.

junkeeroo   1331   4 Replies

boing

N-terminus and C-terminus signal sequence

N-terminus and C-terminus signal sequence

A transmembrane protein has a internal ER signal sequence (downstream of N-terminal of the protein) sequence and an internal stop sequence (hydrophobic region) follow later by a start sequence (another hydrophobic region).
a) Draw the linear str

juno1973   254   1 Reply

habiba

You have a cell line that expresses a glucocorticoid receptor gene fused to a gf

You have a cell line that expresses a glucocorticoid receptor gene fused to a gf

You have a cell line that expresses a glucocorticoid receptor gene fused to a gfp gene. You accidentally left the cell line in the hood with the UV light on a few months back. You now see that upon the addition of dexamethasone it no longer localizes

juno1973   416   1 Reply

padre

Gene expression

Gene expression

Gene etoh-1 is induced in yeast cells when treated with high levels of ethanol. A mutation in region 1 located in the upstream cis acting regulatory region of etoh-1 results in high-level RNA transcription, and a mutation in region 2 results in incre

juno1973   264   N/A

juno1973

Splicing Question

Splicing Question

A patient with skin lesions and extreme sensitivity to UV visits a doctor. A skin biopsy is performed and genomic DNA is isolated and sequenced for Xeroderma Pigmentousum gene mutations. The results indicate a mutation in XPA gene, which consists of

juno1973   303   N/A

juno1973

Can chichenpox infection elevate the levels of cells?

Can chichenpox infection elevate the levels of cells?

This problem originates from USABO 2017 Semifinal #10 question.

I thought it should elevate the level since it's a viral infection, then there should be more white cells gathering around the lesion. But the answer says otherwise. I wa

Juntao Li   198   6 Replies

Juntao Li

Which of the following protists is the cause of "beaver fever"?

Which of the following protists is the cause of "beaver fever"?

[html]Which of the following protists is the cause of "beaver fever"?


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jupe2017   76   1 Reply

kennettj

Lab on microbes in the environment

Lab on microbes in the environment

1)  The effectiveness of sanitation procedures in hospitals is determined by sampling surface for bacteria. Samples can be taken by rubbing a sterile, moistened  cotton swab on a surface and inoculating a nutrient agar plate or with a Rodac

jupigrace   247   2 Replies

yaciel143@yahoo

The highlighted structures increase surface area for ________.

The highlighted structures increase surface area for ________.

[html]

jus10n   213   3 Replies

Andreasnlnvld

Which type of molecule reinforces the shells of forams?

Which type of molecule reinforces the shells of forams?

[html]Which type of molecule reinforces the shells of forams?


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Justin1218   78   1 Reply

vrtyrtrty

Where in the cell would the centromere be found?

Where in the cell would the centromere be found?

[html]Where in the cell would the centromere be found?


▸ in a central region of a chromos

Justin1218   28   1 Reply

Guest

Which statement applies to both simple diffusion and active transport?

Which statement applies to both simple diffusion and active transport?

[html]Which statement applies to both simple diffusion and active transport?


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Justin1218   49   1 Reply

amandaaae