Which of the following describe the placenta? (Check all that apply.)A) The bloods of the mother and the embryo come in close contact without mixing.B) The placenta neutralizes toxins like alcohol and drugs before they reach the fetus.C) Oxygen diffuses from the mother to the embryo.D) Carbon dioxide diffuses from the embryo to the mother.E) The placenta provides nourishment and hormones to the embryo.F) The antibodies made in the embryo protect the mother from infections.
What will be an ideal response?
A, C, D, E
Biology & Microbiology
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The rate of contaminant microbial growth during the exponential phase in food depends on
A) temperature. B) the nutrient value of the food. C) water content. D) temperature, nutrient value, and water content.
Biology & Microbiology
The class of proteobacteria that may be incorporated into the gamma proteobacteria is the ________.
A. delta proteobacteria B. alpha proteobacteria C. beta proteobacteria D. epsilon proteobacteria
Biology & Microbiology
During the 1960s and 1970s, ecologists emphasized competition as the primary factor structuring communities
Indicate whether the statement is true or false.
Biology & Microbiology
amino acides that cannot be produced by the body are called __________ amino acids
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology