Why is it beneficial to urinate after sexual activity? What will be an ideal response?
During sexual activity, microorganisms and/or substances that can feed microorganisms can end up in
the urinary tract. By urinating, both the mechanical action of the flow and the low pH of the urine
itself can clean the urinary tract and reduce the risk of infection.
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Cells in the G2 stage of the cell cycle have ________ as cells of the same species in the G1 stage.
A) twice as many crossovers B) twice as many chromatids C) half as many chromatids D) the same number of chromatids E) half as many chromosomes
How is the adaptation of investing more energy in producing large offspring beneficial in the Atlantic mollies?
A. Larger-sized offspring can avoid predation by other species. B. Larger-sized offspring have increased swimming ability for accessing food in toxic or dark conditions. C. Larger-sized offspring mature to reproductive age at a faster rate. D. Larger-sized offspring can migrate easier among the stressful and nonstressful environments. E. All of the answer choices are correct.
The lacA gene found within the lac operon encodes for galactosidase transacetylase. This enzyme attaches a(n) ________ group to lactose and lactose analogs.
A. acetyl B. carboxyl C. carbonyl D. amino E. hydroxyl
The term mixotroph indicates that an organism __________.
a. can be both photoautotrophic and autotrophic b. can be both parasitic and free-living c. can be both heterotrophic and autotrophic d. has both unicellular and multicellular parts of its life cycle e. has both bacterial and archaeal features as a result of endosymbiosis