Which animal is a chordate?
(a) sea star.
(b) sea cucumber.
(c) acorn worm.
(d) lancelet.
(d) lancelet.
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Heat loss resulting from conversion of a liquid
to a gas is called a. conduction. b. radiation. c. convection. d. metabolism. e. evaporation
Explain why transplanted organs are often rejected by their hosts. What will be an ideal response?
Which of the following statements is TRUE regarding tuberculosis?
A) It occurs only in the lungs. B) Several hundred cells are required for infection. C) It remains viable in dried aerosol droplets for up to eight months. D) Only virulent strains of Mycobacterium tuberculosis produce mycolic acid. E) The immune system is not affected by the infection.
Health care providers determine the specific allergen that is generating symptoms by using a blood test to look at ________ levels
A) IgA B) IgE C) IgG D) IgD E) IgM