If the Purkinje fibers, situated distal to the A-V junction, become the pacemaker of the heart, what is the expected heart rate?

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#Question id: 7752

#Unit 5. Developmental Biology

The autophagy pathway included____

a) the catabolic mechanism that delivers cellular components to lysosomes, where they are degraded

b) Autophagy protects the cell from the harmful or lethal effects of damaged or unnecessary proteins and organelles

c) During starvation, the autophagic breakdown and recycling of cellular components also

ensure cellular survival by maintaining cellular energy levels

Which of the following are the correct prediction about autophagy is true?

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#Question id: 8941

#Unit 9. Diversity of Life Forms

You are trying to identify an organism. It is an animal, but it does not have nerve or muscle tissue. It is neither diploblastic nor triploblastic. It is probably a

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#Question id: 7296

#Unit 5. Developmental Biology

some of the following statements regarding to this experiment are given below. Which of the following statements is incorrect?

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#Question id: 12330

#Unit 10. Ecological Principles

Elephants are not the most common species in African grasslands. The grasslands contain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. Take away the elephants, and the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Which of the following describes why elephants are the keystone species in this scenario?

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#Question id: 10327

#Unit 9. Diversity of Life Forms

A taxon, all of whose members have the same common ancestor, is