Mucus secreting cells immersed in radioactive amino acids... Watch

GorgeousWill
Badges: 3
Rep:
?
#1
Report Thread starter 2 months ago
#1
“Some mucus secreting cells were immersed in a solution of radioactive amino acids. Every five seconds, some of the cells were removed and their organelles were separated and analysed. The radioactivity in the different organelles was measured for each five second interval.

When answering the first two question below, use organelles from this list -
Golgi apparatus, ribosomes, RER, vesicles.

a) Which of these organelles would you expect radioactivity to appear first? Explain your answer”

Can someone explain this question to me please.
0
reply
Adro789
Badges: 11
Rep:
?
#2
Report 2 months ago
#2
I am not 100% but would imagine the vesicles because the amino acids (which are radioactively labelled) absorbed by the cells would first be transported by these vesicles.
0
reply
GorgeousWill
Badges: 3
Rep:
?
#3
Report Thread starter 2 months ago
#3
(Original post by Adro789)
I am not 100% but would imagine the vesicles because the amino acids (which are radioactively labelled) absorbed by the cells would first be transported by these vesicles.
It’s actually the ribosomes that are first. I have no idea how that makes any sense
0
reply
Adro789
Badges: 11
Rep:
?
#4
Report 2 months ago
#4
(Original post by GorgeousWill)
It’s actually the ribosomes that are first. I have no idea how that makes any sense
Hmm it's a bit of a vague question. I can see how it is the ribosomes, I am assuming you have been taught the process of translation. The amino acids which are radioactively labelled are brought into position on the ribosome by transfer RNA molecules, meaning that the ribosomes would be the first place where the radioactivity is detected in the cell. Radioactivity would then be detected later in the ER (and Golgi + secretory vesicles) as the polypeptide is modified after translation by the ribosome(s). Hope this helps!
1
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Latest
Trending
My Feed

Oops, nobody has posted
in the last few hours.

Why not re-start the conversation?

Start new discussion

see more

Oops, nobody is replying to posts.

Why not reply to an un-answered thread?

View un-answered posts

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Can't find any interesting discussions?

Update your preferences

Today on TSR

University open days

  • Cardiff University
    Undergraduate Open Day Undergraduate
    Wed, 27 Mar '19
    find out more
  • University of Portsmouth
    Postgraduate and Part-Time Open Evenings Postgraduate
    Wed, 27 Mar '19
    find out more
  • Middlesex University London
    Postgraduate Open Evening Postgraduate
    Wed, 27 Mar '19
    find out more

Poll

Join the discussion

Where do you need more help?

view results vote now
Which Uni should I go to? (166)
18.55%
How successful will I become if I take my planned subjects? (91)
10.17%
How happy will I be if I take this career? (148)
16.54%
How do I achieve my dream Uni placement? (131)
14.64%
What should I study to achieve my dream career? (85)
9.5%
How can I be the best version of myself? (274)
30.61%
total votes: 895

Watched Threads

View All
Latest
Trending
My Feed

Oops, nobody has posted
in the last few hours.

Why not re-start the conversation?

Start new discussion

Oops, nobody is replying to posts.

Why not reply to an un-answered thread?

View un-answered posts

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

Can't find any interesting discussions?

Update your preferences

Related
Reply
Latest