In chordates, which mesoderm structure forms during gastrulation and provides structural rigidity along the dorsal anterioposterior axis of the embryo?
A. archenteron
B. neural tube
C. notochord
D. epidermis
E. intestinal tract
C. notochord
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IgG, IgM, and IgA are examples of ________ found in blood
A) antibodies B) antigens C) bacteria D) pathogens
What are the two main steps that must happen to a protein in order for it to be catabolized and broken
down by the citric acid cycle?
a. The protein must be phophorylated and broken into amino acids. b. The protein must be glycosylated and transported to the liver. c. The protein must be hydrolyzed and the amino group removed. d. The amino group must be removed followed by the carboxyl group. e. The protein is broken into monomers and converted to acetate.
Which of the following group is most closely related to mammals?
A. Reptiles B. Amphibians C. Lancelets D. Cartilaginous fishes
Our own species, ________, appears to have evolved in Africa less than 600,000 years ago.
A. Homo sapiens B. Homo australopithecus C. Homo erectus D. Homo hominis E. Homo habilis