Which of the following is/are obligate intracellular parasites?
A. Chlamydia and Rickettsia
B. E. coli and Pseudomonas
C. Mycoplasma
D. Treponema pallidum
Answer: A. Chlamydia and Rickettsia
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Megakaryocytes fragment to produce:
a. red blood cells b. lymphocytes c. platelets d. eosinophils e. neutrophils
The stalk that supports the individual eudicot
leaf is the a. vascular bundle. b. petiole. c. node. d. bundle sheath. e. stomata.
A mutation in which one of the following genes can lead to breast cancer?
A) BT05 B) HeLa C) BRCA1 D) BCG E) BCG2
A 6.85 kb EcoRI fragment of DNA is shown below. The location of several restriction sites is indicated. Scale is approximate.
©McGraw-Hill EducationIf you were to digest this DNA with PstI, which length of DNA fragment would migrate the fastest on an agarose gel?
A. 803 B. 235 C. 3425 D. 2622