Studies of the endomembrane system often involve the use of a protein that can emit a green fluorescence (glow). a researcher wants to make a video of cell behavior, so she initially tags the outer nuclear envelope of a cell with the fluorescent tag and records for several hours. later, she sees that the tag is part of a secretory vesicle.
the fluorescent tag likely became incorporated into which of the following organelles during the video?
a. endoplasmic reticulum.
b. ribosomes.
c. mitochondria.
d. peroxisomes.

The correct answer is A) endoplasmic reticulum.

Explanation:

The endomembrane system performs several functions, mainly transport to many destinations inside or outside the cell. Many studies have been made, where the transport chain can be seen, anyway, the endoplasmic reticulum (smooth and rough) is one vital part of this system.

trachea, alveoli, lung capillaries, arteries

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.