Which assisted reproductive technology involves the maturation and fertilization of the egg within laboratory glassware, followed by transfer of the embryo to the uterus 2-4 days later?
A. Surrogate mother
B. In vitro fertilization
C. Artificial insemination
D. Intracytoplasmic sperm injection
E. Gamete intrafallopian transfer
Answer: B
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Which of the following is not a function of histone H1?
A. stabilizing nucleosomes B. promoting higher order chromosome structure C. enhancing the repression of transcription by nucleosomes D. binding to regions undergoing active RNA synthesis E. All of these options are functions of histone H1
Let us suppose that someone is successful at producing induced pluripotent stem cells (iPS) for replacement of pancreatic insulin-producing cells for people with type 1 diabetes. Which of the following could still be problems? I
the possibility that, once introduced into the patient, the iPS cells produce nonpancreatic cells II. the failure of the iPS cells to take up residence in the pancreas III. the inability of the iPS cells to respond to appropriate regulatory signals A) I only B) II only C) III only D) I, II, and III
covalent bond
What will be an ideal response?
When measuring the age of a fossil using
Carbon dating, what is the oldest age that a fossil can be?
a. 2.2 million years old b. 200,000 years old c. 85,000 years old d. 72,000 years old e. 60,000 years old