Which statement is true of a placenta?
a. the placenta passes oxygen, nutrients, and other us...
Biology, 22.08.2019 17:00 skateboardb718
Which statement is true of a placenta?
a. the placenta passes oxygen, nutrients, and other useful substances from the fetus to the mother.
b. the placenta passes oxygen, nutrients, and other useful substances from the mother to the fetus.
c. the placenta mixes blood from the mother and fetus together.
d. the placenta protects the mother from being attacked by the fetal immune system.
Answers: 2
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Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?
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