PCAT Biological Processes – Organelles
- by
- Jan 23, 2018
- PCAT Question of the Day
Which two organelles appear most similar when viewed under the electron microscope?
A) nucleus and lysosome
B) smooth ER and golgi apparatus
C) mitochondrion and plasma membrane
D) peroxisome and nucleus
Click for Explanation
Both the Golgi and smooth ER appear as membranes with many folds.
A) nucleus and lysosome, incorrect, The nucleus will be much larger than a lysosome.
B) smooth ER and Golgi apparatus, correct.
C) mitochondrion and plasma membrane, incorrect, The mitochondrion will have both an inner and outer membrane and a matrix while the plasma membrane consists of a phospholipid bilayer.
D) peroxisome and nucleus, incorrect, The peroxisome is much smaller than the nucleus and the nucleus is bounded by the nuclear envelope.
Search the Blog
Free Consultation
Interested in our Online MCAT Course or one of our One-on-One MCAT Tutoring packages? Set up a free consultation with one of our experienced Academic Managers!
Schedule NowPopular Posts
-
MCAT Blog How to Review MCAT Full-Lengths

Free MCAT Practice Account
Need great MCAT practice?Get the most representative MCAT practice possible when you sign up for our free MCAT Account, which includes a half-length diagnostic exam and one of our full-length MCAT practice exams.
Learn More
Submit a Comment