I am NOT a Taxi or Uber Driver!

Question

Can you solve this riddle?

I am of Greek descent.

I have four siblings who are also famous.

I was born in the ER.

I may not be big, but I have a big job to do.

I am not fat, but my friends are.

I am not a taxi or Uber driver…

I like juice.

(These clues may sound random, but they will make a lot of sense once the answer is revealed!)

HINT:

I transport my friends into the lymph.

Answer 1

Is it

Chylomicron

I am of Greek descent.

Comes from the Greek χυλός, chylos

I have four siblings who are also famous.

Chylomicrons are one of 5 lipoproteins, including very low-density lipoprotein, intermediate-density lipoprotein, low-density lipoprotein, high-density lipoprotein

I was born in the ER.

Chylomicrons are formed in the Endoplasmic Reticulum

I may not be big, but I have a big job to do.

The second half of the name, micron, means small particle

I am not fat, but my friends are.

Part of the job of lipoproteins is to transport fat particles

I am not a taxi or Uber driver…

But it does exist to transport things

I like juice.

The word Chylomicron comes from the word chylos, meaning juice

Answer 2

Are you,

Protein(Protein molecules)

I have four siblings who are also famous.

Carbs, Fats, Fiber, Salts. Famous combination with protein watched in diets.

I was born in the ER.

Synthesized in endoplasmic reticulum(ER).

I may not be big, but I have a big job to do.

Protein molecules are small, but very Important in the body.

I am not fat, but my friends are.

Protein does not make you fat, but carbs and fat, it's friends do.

I am not a taxi or Uber driver…

Not sure it's related, but okay. It is not a taxi or Uber Driver

I like juice.

Guava, avocado, etc juices contain high protein. Could also be protein juices or shakes.

Greek Descent

Derived from Greek proteios meaning , "the first quality".

Not sure though. Just a try.

Answer 3

A partial answer is

A (medical/surgical) needle

As,

I am of Greek descent

Unconfirmed literature says needles are of Greek origin

Four siblings

Scissors, prongs, knife, fork, ?

Born in the ER

ER- Emergency Room, a kind of ICU, where operations are done

May not be big...

Usually needles are small...but do the important job of stitching...

Not fat...

A needle is thin, when compared to its other siblings..

Not a taxi driver...

It drives the suture...

Juice liking...

To be provided...