Which one of the following is the most common contaminant of blood cultures?
A) Staphylococcus aureus
B) Staphylococcus epidermidis
C) Streptococcus pneumoniae
D) Streptococcus pyogenes
B) Staphylococcus epidermidis
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Salmon move between freshwater and marine environments during their lifecycle. Which of the following statements about their lifecycle is correct?
A. None of the answer options is correct. B. Juvenile salmon and spawning adult salmon must avoid excessive loss of water. C. Feeding adult salmon must avoid excessive gain of water. D. Feeding adult salmon and juvenile salmon must avoid excessive loss of electrolytes. E. Spawning adult salmon must avoid excessive gain of electrolytes.
Which term or terms best describe a plant that is growing taller with growth of its stems, leaves, and roots?
a. primary b. secondary c. primary, lateral meristem d. primary, apical meristem e. secondary, vascular cambium
ACE inhibitors prevent angiotensin converting enzyme (ACE) from performing its role in the body. Which statement best describes why doctors prescribe ACE inhibitors?
A) ACE inhibitors block the production of renin in the juxtaglomerular cells in the kidneys reducing fluid volume and, therefore, blood pressure. B) ACE inhibitors slow down the heart rate by not allowing atrial natriuretic peptide (ANP) to be released from the heart, decreasing sodium production and, therefore, blood pressure. C) ACE inhibitors reduce blood pressure by blocking the conversion of angiotensin I to angiotensin II. D) ACE inhibitors block baroreceptors and reduce sympathetic activity to the cardiovascular system, thereby reducing blood pressure. E) ACE inhibitors increase blood pressure by blocking the RASS pathway.
The four types of body tissues are:
A) connective, epithelial, nervous, and muscle. B) connective, neuronal, muscle, and epithelial. C) epithelial, hormonal, cellular, and bone. D) connective, cardiac, nervous, and adipose. E) epithelial, glandular, muscle, and nervous.