The surest way to diagnose cancer is through ____
a. DNA probes
b. biopsies
c. x-rays
d. MRI imaging
e. radioactive monoclonal antibodies
ANSWER: b
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Which of the following statements about plant and animal development is false?
A. Cell division occurs in discrete regions within the plant body, but tissue differentiation occurs throughout the plant body. B. Cell differentiation and growth occurs throughout the developing animal body. C. Animal cells move during development, whereas plant cells do not. D. In both plants and animals, signaling molecules induce cell differentiation. E. Animal embryos pass through a gastrula stage, whereas plant embryos do not.
Which structure in the development of the amphibian is equivalent to the primitive knot in bird
development?
a. the archenteron b. the dorsal lip of the blastopore c. the ventral lip of the blastopore d. ectoderm e. endoderm
Refer to the accompanying figure. Which of the fruits listed is botanically classified as a berry?
a. c
b. d
c. f
d. g
e. h
Cytokines assist in regulating white blood cell formation.
Answer the following statement true (T) or false (F)