The statement 'polypeptides in the ER are usually larger than polypeptides synthesized from the same mRNA that have not entered the ER' is false.
The rough endoplasmic reticulum is the site where polypeptides enter so that protein formation can take place. Apart from protein formation, polypeptides are needed for various other metabolic functions by the ER.
Those polypeptides that are smaller in size can enter the endoplasmic reticulum because of the entering space and the small size of the endoplasmic reticulum. On the other hand, the polypeptides that are large, although being synthesized from the same mRNA, stay outside as they cannot enter the ER due to their large size.
To learn more about the mRNA, click here:
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The anatomical position is defined to be the body standing upright with face and torso and feet directed forward and arms around 45 degrees away from the torso with palms facing forward. This is a standard reference in human anatomy, especially in describing body part relations (i.e. the 5th digit of the hand is medial to the umbilicus, etc.). The ulna, in anatomical position is inside or medial to the midline of the body.
<em>An easy way in determining where the ulna and the radius are is that the ulna is in line with the pinky finger and the radius is in line with the thumb. </em>
Answer:
T3 (tri-iodothyronine) and T4 (thyroxine).
Explanation:
Which is a characteristic of soil with a high percentage of clay?
Able To Hold Water
