Which of the following statements is INCORRECT?
a. Langerhans cells activate the immune system.
b. Tactile cells anchor the skin to the body.
c. Keratinocytes produce a fibrous protein to protect the epidermis.
d. Melanin provides protection against ultraviolet (UV) radiation.
Tactile cells anchor the skin to the body
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Before the advent of biotechnology, diabetics would use insulin harvested from cows. Now they receive human insulin produced through ________.
A. gel electrophoresis B. gene therapy C. PCR D. recombinant DNA technology
Okazaki fragments are found in the leading strand of DNA
__________________ Indicate whether the statement is true or false.
What evidence led to the confirmation that Albert DeSalvo was the Boston Strangler?
A) an analysis of blood types from the crime scene B) an analysis of fingerprints from the crime scene C) an analysis of DNA from the crime scene D) an analysis of witness testimony from the crime scene
Please match the viral diagnostic method to its description.
Used to detect specific antibodies being produced against viruses A) PCR B) Immunological testing C) Electron microscopy D) Cell and tissue culture techniques E) Observation of the patient