Nano is a prefix that means:

• one-millionth

• one-hundredth

• one-billionth

• one-tenth

Pluripotent stem cells (iPS cells) are reprogrammed adult cells produced in a lab to take on characteristics of which type of stem cell?

• somatic stem cells

• tissue-specific stem cells

• embryonic stem cells

• mesenchymal stem cells

What approval process do biomedical researchers seek when they create a transgenic animal?

• submit documentation to the Department of Agriculture

• register the process with the Internal Revenue Service

• apply for a patent from the US Patent and Trademark Office

• petition the National Institutes of Health

Adult stem cells are undifferentiated cells that are also known as:

• somatic stem cells

• embryonic stem cells

• pluripotent stem cells

• hematopoietic stem cells

Particles in sunscreen may accumulate in a water source. This is known as:

• bioaccumulation

• biodegradable

• photosynthesis

• synthesis

The first reports of successful mammal cloning date to the:

• 18th century

• 19th century

• 20th century

• 21st century

Replace, reduce and refine are alternative scientific methods researchers use to:

• examine cellular tissues

• maintain all lab equipment

• design experiments that do not use animals

• request grants for special funding

A xenograft is used in a heart transplant. Where did this tissue come from?

• the recipient's body

• a cadaver of the same species

• an identical twin

• a different species

In regenerative medicine, once the biomaterial matrix is developed, the scaffolds must be able to:

• leave

• be made smaller

• dissolve

• remain unchanged

Somatic stem cells are undifferentiated cells that are also called:

• embryonic stem cells

• adult stem cells

• totipotent stem cells

• zygote stem cells