What will happen by the end of the eighth week of development?
A. Limbs form, and paddles at their ends are sculpted into digits.
B. The umbilical cord and the circulatory system develop.
C. All of the organ systems will be formed, and apoptosis has eliminated the tail.
D. The fetal heartbeat can be heard clearly through a stethoscope positioned on the mother’s abdomen.
E. The fetus has begun not only to detect sounds but also to remember some of them.
Answer: C
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You wish to determine the cellular location of a protein but unfortunately it is not particularly antigenic (i.e., it can't develop a strong antibody response). How could you solve this problem?
A. Create a fusion protein with an epitope tag that can be visualized by incubation with fluorescently tagged antibody to the epitope. B. Create a fusion protein with an epitope tag that is fluorescent without the addition of antibodies. C. Create a fusion with green fluorescent protein (GFP). The fusion protein will fluoresce when streptavidin is added. D. Express the protein as a fusion with biotin. The addition of GFP will cause fluorescence. E. None of these methods will work.
The general tissue type that includes cells called neurons and neuroglia is _________ tissue.
Fill in the blank(s) with the appropriate word(s)
Which test cannot be used for identification of a person's HIV status?
A. ELISA B. Immunochromatographic testing C. Western Blot D. Biochemical tests
Protection, absorbtion, secretion of digestive enzymes
A. Pseudostratified columnar B. Simple columnar C. Simple cuboidal D. Simple squamous E. Stratified squamous F. Transitional