Answer the following questions true (T) or false (F)
1. The endospore stain reveals internal structures within cells of the genera Bacillus and Clostridium.
2. Acid-fast cells such as Mycobacterium lose the color of the primary stain in the presence of hydrochloric acid.
3. Three-dimensional images of specimens can be obtained using scanning electron microscopes.
1. TRUE
2. FALSE
3. TRUE
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When we say that DNA replication is semiconservative, we mean that:
A. only half of an organism's DNA is replicated during each cell division. B. when DNA is replicated, each new double helix contains one parental strand and one newly synthesized daughter strand. C. when DNA is replicated, one double helix contains both parental strands and one contains two newly synthesized daughter strands. D. parental DNA stays in the parent cell and daughter DNA ends up in the daughter cell. E. None of the answer options are correct.
What conditions are likely to apply if the progeny from the cross AaBb × AaBb appear in the 9:3:3:1 ratio?
A) complete dominance, independent assortment, and no gene interaction B) dihybrid test cross C) incomplete segregation and complete dominance D) dihybrid cross with incomplete dominance E) gene interaction and independent assortment
In order to take advantage of adoptive cell therapies, the tumor must be biopsied and the tumor infiltrating leukocytes are ________ for reactivity and then cultured ________ prior to being reinfused into the patient
A) mutated; in vivo B) mutated; in vitro C) screened; in vivo D) screened; in vitro
Which cells produce specific antibodies?
A. Macrophages B. Monocytes C. T cells D. B cells E. Plasma cells