Parents are informed after an amniocentesis that the results show a baby who has an extra number 21 chromosome. Should there be concern and what might the problem be?
What will be an ideal response
The fetus will become a Down syndrome baby. The baby will probably be retarded, have short fingers and a large tongue, and have a tendency for a short stature.
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People who suffer from hemophilia A fail to produce a functional Factor VIII; as a result,
A) they lack a functional intrinsic pathway. B) they lack a functional extrinsic pathway. C) they lack a functional common pathway. D) their coagulation times are much longer than normal. E) their coagulation times are too quick.
Allosteric inhibitors are also called noncompetitive inhibitors.
Answer the following statement true (T) or false (F)
Which best describes the reticular formation of the brain?
A. It is mainly involved in motor coordination and balance. B. It is the master endocrine gland of the brain. C. It is primarily responsible for visual perception. D. It integrates information from all regions of the CNS, and incorporates the mechanisms that regulate sleep and wakefulness. E. It is the primary synaptic relay station for sensory information entering the CNS.
Which statement is incorrect about a chemical buffer?
a. It consists of a pair of substances involved in a reversible reaction, one that can yield free H+ and one that can bind with free H+. b. It minimizes changes in the pH of a solution when an acid or base is added to or removed from the solution. c. It responds to pH changes in about three minutes, but then can be very effective in preventing dramatic pH changes. d. It cannot actually remove hydrogen ions from the body. e. It acts according to the law of mass action.