Which embryonic membrane forms the commonly of the placenta?

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#Question id: 11204

#Unit 7. System Physiology – Animal

Why do Na+ ions enter the cell when voltage-gated Na+ channels are opened in neurons?

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#Question id: 29449

#Unit 6. System Physiology – Plant

It is very important to maintaining low O₂ concentrations in nodules, and it maintained by various ways

(a) With the help of parenchyma

(b) With the help of Lb

(c) Bacterial respiration as O₂ sink

(d) With the help of sclerenchyma

Which of the following is true regarding to maintain low O₂ concentrations

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#Question id: 14487

#Unit 13. Methods in Biology

What is the probability of a particular person getting 9 cards of the same suit in one hand at a game of bridge where 13 cards are dealt to a person ?

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#Question id: 15451

#Unit 4. Cell Communication and Cell Signaling

T-cell dependent, B-cell activation require many signals except___

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#Question id: 8889

#Unit 9. Diversity of Life Forms

What would be the most effective method of reducing the incidence of blood flukes in a human population?