Which of the following is the best reason to classify Streptococcus in the Lactobacillales?
A) Gram reaction
B) morphology
C) fermentation of lactose
D) rRNA sequences
E) found in dairy products
D
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You are preparing to administer the first of two units of packed RBCs. Evaluate each of the following statements about the safe administration of blood.
Answer T or F. Discuss why the false statements are incorrect. 1. Prime the correct tubing and filter with normal saline. 2. Verify K.L.'s identification with the secretary in the endoscopy suite. 3. Obtain baseline vital signs before starting the transfusion. 4. Begin the transfusion at a rate of 125ml per hour 5. Take K.L.'s vital signs 30 minutes after starting the transfusion. 6. Complete the transfusion within 6 hours of receiving the unit.
If a population was in Hardy-Weinberg equilibrium, then ____ would occur in that population.
A. directional selection B. an increase of recessive alleles C. no evolutionary changes D. assortive mating E. natural selection
The relative impermeability of membranes to
water soluble molecules is a result of
a. the nonpolar nature of water. b. the presence of large proteins that extend through both sides of membranes. c. the presence of inorganic salt crystals scattered through some membranes. d. the presence of cellulose and waxes. e. the presence of phospholipids in the lipid bilayer.
Cardiac muscle cells are ____
a. involuntary b. spindle-shaped c. multinucleated d. slow contracting e. found in the walls of blood cells