Answer the following questions true (T) or false (F)
1. The archenteron is mostly made of the mesoderm.
2. The notochord induces the formation of the neural plate in vertebrates.
3. Somites are repeating blocks of ectodermal tissue.
1. FALSE
2. TRUE
3. FALSE
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Which of the following products of the light reactions of photosynthesis are later employed in the Calvin cycle?
a) ADP and RuBP b) free oxygen and water c) NADP+ and ATP d) NADPH and ATP e) electrons and H+
The human cerebral cortex accounts for what percentage of the total mass of the brain?
A) 20% B) 40% C) 60% D) 80%
This type of hormone characteristically requires a second messenger
A) water-soluble B) prostaglandin C) steroid D) lipid-soluble
A group of organisms of the same species that live together in the same place make up a(n) ____
a. cell b. ecosystem c. tissue d. population e. biosphere