Several medically important structures are identified by structural staing procedure. Which of the followings are included in this list?
A. Capsule
b. Cell membrane
c. Flagella
d. Endospores
e. Plasmid
f. Lipopolysaccharide
A. a, d, and e
B. a, c, and d
C. a, e, and f
D. a, b, c, and d
E. a, c, d, and e
Ans: B. a, c, and d
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The individuals responsible for constructing the first model of DNA structure were
(a) Wallace and Watson. (b) Lamarck and Darwin. (c) Mendel and Meischer. (d) Crick and Watson.
Choose the correct order of the chambers through which oxygen-poor blood flows in an amphibian
heart. a. atrium ? ventricle ? sinus venosus ? conus arteriosus b. atrium ? conus arteriosus ? ventricle ? sinus venosus c. sinus venosus ? atrium ? ventricle ? conus arteriosus d. conus arteriosus ? atrium ? sinus venosus ? ventricle e. ventricle ? atrium ? conus arteriosus ? sinus venosus
You are given the task of confirming the categorization of a newly discovered animal that has been tagged as a species of annelid. What evidence would convince you that it is indeed an annelid and not a roundworm or flatworm?
A) an incomplete digestive tract B) a highly branched gastrovascular cavity C) parasitic feeding habits D) body segmentation
Which solute must be administered in high amounts because of its very efficient secretion and removal by the kidney tubules?
A. Penicillin B. Amino acids C. Vitamin K D. Glucose E. HCO3- ions