How do ferns differ from other seedless vascular plants?
A) They lack xylem.
B) Their sperm are flagellated.
C) The sporophyte is dominant.
D) They have broad leaves.
E) Their flowers are microscopic.
D
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How many pairs of chromosomes does the human genome normally have?
A. 6 B. 15 C. 23 D. 38 E. 46
All of the following are located on the exterior
surface of a prokaryote EXCEPT a. flagellum b. pilus c. plasma membrane d. capsule e. none of these
Which lineage includes living members that are the ray-finned fishes, with fins supported by thin and flexible bony rays?
a. Actinopterygii b. Sarcopterygii c. Petromyzontoidea d. Chondrichthyes
Insulin is a protein that is made up of 51 amino acids. It would have been translated from an mRNA transcript that had at least:
A) 1530 nucleotides. B) 153 nucleotides. C) 300 nucleotides. D) 1153 nucleotides.