Persons who suddenly travel from home and cannot recall their past are in a state of:
A) anxiety.
B) paranoia.
C) fugue.
D) depression.
C
Explanation:
A) Anxiety is worry or apprehension.
B) Paranoia is a feeling of exaggerated mistrust.
C) Correct.
D) Depression is sadness and loss of interest in things.
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What did Michael Gazzaniga and colleagues reveal about hemispheric dominance for language in his studies of humans in whom the corpus callosum had been severed? Choose the correct option
A) If a split-brain person sees a word in the left visual field, he says he sees nothing B) If a split-brain person sees a word in the right visual field, he says he sees nothing C) The left hemisphere can read words but the right hemisphere is necessary to speak the words D) The right hemisphere knows nothing about language
You are going to use flow cytometry to determine the proportion of developing B cells in the bone marrow that are immature, anergic, or mature. You have three monoclonal antibodies specific for three different B-cell surface proteins
The first has specificity for the cell-surface protein CD19, which is expressed by all developing and mature B cells; the second is specific for the Fc region of IgD; and the third is specific for the Fc region of IgM. The antibodies are conjugated to three different fluorescent tags that can be detected and distinguished by the flow cytometer. A. Use histograms to show your analysis of CD19-positive cells and indicate which part of your histogram you would gate to analyze IgM and IgD expression. Indicate the gated population with an arrow. B. Using a two-dimensional dot plot, compare the expression of IgD and IgM of these gated cells, and say which of these populations represents (i) immature B cells, (ii) mature B cells, and (iii) anergic B cells.
An optimistic explanatory style is characterized by anxiety, anger, and hostility.
Answer the following statement true (T) or false (F)
Antitoxins are types of:
A. Interleukins B. Antigens C. Gamma globulins D. Antibodies