Which of the following organelles is not part of the endomembrane system?
A) ribosome
B) endoplasmic reticulum
C) Golgi apparatus
D) lysosome
E) secretory vesicle
A) ribosome
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To engulf a bacterium, a white blood cell
would use
a. facilitated diffusion b. osmosis c. phagocytosis d. exocytosis e. sodium-potassium pumps
both the mouth and the nasal passages lead to a hollow space at the back of the throat called the
What will be an ideal response?
Each gene in this molecule gives the instructions for making a ______.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements concerning the chemical structure of an antibody is FALSE?
A. Antibodies are formed of four polypeptide chains. B. Antibodies have two long peptide chains known as heavy chains. C. Antibodies have two short peptide chains known as light chains. D. The stem and arm are connected by a hinge. E. The heavy and light chains are connected by hydrogen bonds.