The lining of the uterus that is discharged during the menstrual phase is the
A. oviduct.
B. myocardium.
C. endometrium.
D. hymen.
E. endocardium.
Answer: C
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TCRs are found exclusively on T cells
Indicate whether the statement is true or false.
Sexual reproduction in animals requires _____
a. meiosis b. fertilization c. spore formation d. meiosis and fertilization
Induction of long-term potentiation and long-term depression requires activation of two types of:
a. acetylcholine receptors. b. GABA receptors. c. norepinephrine receptors. d. glutamate receptors. e. serotonin receptors
According to the theory of sea-floor spreading, oceanic islands, such as the Hawaiian Islands depicted in the figure above, form as oceanic crustal plates move over a stationary "hot spot" in the mantle
Currently, the big island of Hawaii is thought to be over a hot spot, which is why it is the only one of the seven large islands that has active volcanoes. What should be true of the island of Hawaii? 1. Scientists in search of ongoing speciation events are more likely to find them here than on the other six large islands. 2. Its species should be more closely related to those of nearer islands than to those of farther islands. 3. It should have a rich fossil record of terrestrial organisms. 4. It should have species that are not found anywhere else on Earth. 5. On average, it should have fewer species per unit surface area than the other six islands. A) 1, 2, and 3 B) 1, 2, and 5 C) 1, 2, 3, and 4 D) 1, 2, 4, and 5