What are structural colors produced by in fish?

a. Biochromes
b. Iridophores
c. Pigments
d. Chromatophores


b

Biology & Microbiology

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The time period from the initial contact with an infectious agent to the appearance of the first symptoms is known as the _____

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Which of the following statements is true?

A) The shortest wavelength of light is the ultraviolet ray, which is the highest in energy. B) The longest wavelength of light is the ultraviolet ray, which is the highest in energy. C) The longest wavelength of light is the infrared ray, which is the highest in energy. D) The shortest wavelength of light is the infrared ray, which is the highest in energy. E) The shortest wavelength of light is the visible light, which is the highest in energy.

Biology & Microbiology

The human genome has how many pairs of autosomal chromosomes?

A) 44 pairs B) 22 pairs C) 24 pairs D) 46 pairs E) 23 pairs

Biology & Microbiology

An agricultural worker experiences difficulty breathing which becomes progressively worse. Tests show inflammation and damage of the lung tissue, but IgE antibodies and granulocytes are in the normal ranges. With which disorder of the immune system are these signs and symptoms consistent?

A. allergic reaction B. type III (immune complex-mediated) hypersensitivity C. type IV (delayed) hypersensitivity D. autoimmunity E. acquired immunodeficiency

Biology & Microbiology