Which of the following is NOT part of the body's first line of defense against microbial attack?

A) Stomach acid
B) Phagocytes
C) Skin
D) Lysozyme
E) Mucus


B

Biology & Microbiology

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Which is a hominin?

a. chimpanzees only b. australopiths only c. baboons only d. humans and australopiths e. chimpanzee, australopiths, and baboons

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What sensory modalities are used by the message receivers in honeybee waggle dance communication? (Check all that apply.)

A. visual B. chemosensory C. auditory D. autonomic E. proprioceptive

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Melanin protects the skin from

a. desiccation. b. abrasion. c. ultraviolet radiation. d. infrared damage. e. invasion by bacteria

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Which of the following components of the

dermis is incorrectly matched with its usual function? a. blood vessels; nutrient supply b. sweat glands; hormone secretion c. oil glands; lubrication of hair and skin d. hairs; insulation e. receptors; pain

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