A characteristic that sets the endocrine system apart from the nervous system as a communication system is that endocrine control tends to be faster than nervous control.
a. true
b. false
Answer: b. false
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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.
A population with ________ is at risk for extinction
Fill in the blank(s) with correct word
Retroviruses are characterized by ____.
A. RNA that is used as a template to produce DNA in a host cell B. integrating RNA into the host’s chromosome C. the enzyme alkaline phosphatase D. having one strain that causes H1N1 E. the lack of a protein coat
An epidemiologist is investigating a new disease and observes what appear to be bacteria inside tissue cells in clinical samples from victims. The scientist wants to try to isolate the bacteria in the lab. What culture conditions are most likely to be successful?
A. culturing on blood agar plates B. inoculation of EMB plates C. incubation in an anaerobic culture system D. inoculation of cell cultures E. inoculation of a minimal medium broth