During cell crawling, the cell must attach to the substrate upon which it is crawling. One group of attachment proteins is the ________.
A) actins
B) actomyosins
C) creatines
D) integrins
E) titins
D) integrins
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Why has the development of iPS cells been viewed as a major breakthrough in the development of stem cell therapies? Select all correct choices
A. It allows us to develop pluripotent stem cells without the ethical issues involved in obtaining them from human embryos. B. It may ultimately allow us to obtain stem cells from any individual - we can match the patient to the tissue. C. It is easy and inexpensive. D. It is a proven technique that we will be able to move into clinical trial very quickly. E. It will allow us to "grow" new organs very quickly.
In the Triple Sugar Iron Agar, the three sugars are
A. Glucose, Galactose, Lactose B. Glucose, Sucrose, Mannose C. Glucose, Fructose, Sucrose D. Glucose, Galactose, Sucrose E. Glucose, Lactose, Sucrose
An X-linked recessive gene (c) produces red-green color blindness. A normal woman whose father was color blind marries a color-blind man. What are the chances that the first son will be color blind?
A. 0% B. 25% C. 50% D. 75% E. 100%
Which of the following infectious disease transmission modes is not correctly paired with an example?
A) windborne: cholera B) breast milk: HIV C) flea bite: Plague D) touching: cat-scratch fever E) swimming: swimmer's ear