Answer the following questions true (T) or false (F)
1. Cleavage and gastrulation take place in animals such as humans and birds but not in frogs.
2. Early vertebrate embryos share a general similarity in shape in the period following somite development.
3. Cells first arrange themselves into layers during organogenesis.
1. FALSE
2. TRUE
3. FALSE
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Each of the following is an example of microfilament-based motility and contractility except
A) ciliary motility. B) pseudopodia formation. C) cytoplasmic streaming. D) cytokinesis. E) trailing edge retraction in a moving cell.
The clams, oysters, and mussels belong to this group because of the nature of their shells.
A. bivalves B. slugs C. chitons D. radulas
The codon that signals the end of a growing polypeptide is called a _________ codon
Fill in the blank(s) with the appropriate word(s).
The most numerous WBCs, that have multilobed nuclei and are very phagocytic are
A. neutrophils. B. basophils. C. monocytes. D. eosinophils. E. lymphocytes.