What developmental event was key to the evolution of the chordates, by forming the notochord and dorsal nerve cord?
A. morphogenesis
B. organogenesis
C. gastrulation
D. neural crest formation
E. neurulation
E. neurulation
You might also like to view...
True or false: Competition can occur over resources such as space, mates, and nesting sites, not just over food
A. true B. false
Because Amanda has cystic fibrosis, she is a frequent patient at her local hospital due to lung
infections. On one visit, she was infected with P. aeruginosa. In her lungs, these bacteria secrete a protective substance that forms a layer over the bacteria. This layer is likely a(n) __________.
a. biofilm b. histamine c. antimicrobial protein complex d. complement toxin
Which of the following is not true about archaeal ribosomes?
A. They have similar antibiotic sensitivities to those of bacteria. B. They are 70S like bacterial ribosomes. C. They may possess ribosome binding sites homologous to bacterial Shine-Dalgarno sequences. D. All of these are true about archaeal ribosomes.
Each day the human heart sends about _____________ liters of blood throughout the body.
A. 50,000 B. 1,000 C. 7,000 D. 2,000 E. 5,000