When DNA is extracted from a sample for HLA typing, the purity of the sample is best
determined by the ratio of the sample's absorbance at 260 and 280 nm.
Indicate whether the statement is true or false
TRUE
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Which of the following is a property of the diffuse modulatory systems of the brain? Choose the correct option
A) Originates with a small set of neurons B) Each neuron influences several others, contacting more than 100,000 postsynaptic neurons C) Releases transmitter into the extracellular fluid, diffusing to many neurons D) Originates with a small set of neurons; each neuron influences several others, contacting more than 100,000 postsynaptic neurons, and releases transmitter into the extracellular fluid, diffusing to many neurons
The masseter muscle is found in the area of the face
Indicate whether the statement is true or false
Critical thinking is careful and deliberate determination of whether to accept, reject, or suspend judgment.
Answer the following statement true (T) or false (F)
Which fetal support system allows the exchange of oxygen, nutrients, and wastes between the mother and baby?
A) umbilical cord B) amniotic fluid C) placenta D) uterus