________ are made by certain pathogens such as Staphylococcus, Salmonella, Escherichia coli, and Clostridium botulinum. These substances often travel in the bloodstream and cause disease symptoms

Fill in the blank(s) with correct word


Bacterial toxins

Biology & Microbiology

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Living organisms are distinct from nonliving

things by which of the following features?

a. continuous energy inputs b. complex molecular structure c. DNA that guides functioning d. sensing and responding to change e. all of these except complex molecular structure

Biology & Microbiology

Radioactive radon gas is emitted from ____

a. rocks and soil b. medical x-rays c. cosmic radiation d. nuclear medicine e. uranium mines

Biology & Microbiology

In order for a girl to inherit hemophilia A, her parents would have which genotypes? Select one:

a. XHXH, and XHy b. XHXh, and XhY c. XhXh, and XHy d. XHXH, and XHY e. XHXh, and XHY

Biology & Microbiology

What cytokine inhibits cytokine production from macrophages to down-regulate the immune response?

A) interleukin-5 B) interleukin-4 C) interleukin-10 D) interferon- E) interferon-

Biology & Microbiology