Gastrulation ________
A) produces a solid ball of cells
B) changes the blastocyst into an embryo that has three tissue layers
C) changes the fertilized egg into a blastocyst
D) changes a gastrula into a blastocyst
B
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Proteins whose conformations change when they are bound to an effector molecule are called
A) enzymes. B) allosteric proteins. C) regulatory proteins. D) activator proteins. E) inhibitory proteins.
If, during a dissection, you were asked to place a pin in the part of the kidney containing the collecting duct, you would pin the
A. renal periphery. B. renal cortex. C. glomerulus. D. collecting duct. E. renal medulla.
what membrane disrupting exotoxin secreted by Staph aureus cause leukocyte lyses?
What will be an ideal response?
How many ventricles does the human brain have?
A. 5 B. 4 C. 2 D. 10