Which of the following molecules is not considered a porphyrin?
A. Hemoglobin
B. Peptidoglycan
C. Vitamin B12
D. Chlorophyll
Answer: B
Biology & Microbiology
You might also like to view...
Which of these are spore-producing structures?
A) sporophyte (capsule) of a moss B) antheridium of a moss or fern C) archegonium of a moss or fern D) gametophyte of a moss
Biology & Microbiology
The primary structure in a protein
A. refers to the helical folding of a protein. B. refers to two or more polypeptides linked to one another. C. refers to the sequence of amino acids. D. refers to the initial folding of a protein.
Biology & Microbiology
The region at the tip of arrow “C” is used for
a. feeding. b. swimming. c. support. d. reproduction. e. digestion.
Biology & Microbiology
Cell-mediated immunity most directly involves cells attaching infected and/or cancerous cells.
A) B B) T C) Macrophage D) MHS
Biology & Microbiology