Which essential plant nutrient is used to synthesize DNA?
A. phosphorus
B. potassium
C. magnesium
D. calcium
Answer: A. phosphorus
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Which of the following is determined about DNA
from X-ray diffraction data? a. DNA is uniform in diameter. b. DNA is long and narrow. c. Part of the DNA molecule repeats itself often. d. The DNA molecule is spiraled. e. All of these are determined.
Your patient is an approximately 60-year-old male who presents at a local shopping mall unresponsive. Initial assessment findings are as follows: "Pt is unresponsive, has a weak rapid radial pulse, seems confused, pale, cool and clammy skin." A rapid medical assessment reveals a medical alert bracelet with insulin-dependent diabetic on it. Based on your initial assessment, what is the most likely cause of the patient's condition?
A) Hyperosmolar hyperglycemic nonketotic coma (HHNK) B) Hypoglycemia C) Hyperglycemia D) Diabetic ketoacidosis (DKA)
Molecular-based phylogies place the phylum Platyhelminthes in the Protostomia. How do scientists best explain the morphological differences between flatworms and the other members of the Lophotrochozoa?
A. Modern Platyhelminthes do not have a coelom but did originate from an ancestor that had one. B. The Platyhelminthes clade separated from other clades before coeloms evolved and consequently Platyhelminthes have never had a coelom. C. Platyhelminthes evolved from an ancestor without a coelom but developed one during the course of their evolution. D. Some Platyhelminthes have a coelom but others do not and it is difficult to conclude anything about its evolution within the clade. E. Platyhelminthes originated from ancestors with a coelom and have retained it to the present time.
The component of the gram-negative outer membrane called endotoxin is also known as _______
Fill in the blank(s) with the appropriate word(s).