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: 15986

#Unit 12. Applied Biology

which of the following plant secondary metabolite is involve in protection from the fungal infection?

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#Question id: 14978

#Unit 2. Cellular Organization

Inclusion bodies are enclosed by a membrane about 2.0 to 4.0 nm thick, which is single-layered and not a typical bilayer membrane. They are 

1. Poly β hydroxybutyrate granules

2. cyanophycin granules

3. Glycogen granules

4. Sulfur granules

5. Gas vacuoles

6. Polyphosphate granules

Which option is having correct combinations?

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#Question id: 11075

#Unit 7. System Physiology – Animal

A 65-year-old man with emphysema due to 34 years of cigarette smoking is admitted to hospital due to dyspnea. With further tests the mean pulmonary arterial pressure is determined to be 45 mm Hg at rest. He is hypoxic (PO2 = 49 mm Hg), hypercapnic (85 mm Hg), and slightly acidotic. The cardiovascular and oxygen changes are due to which of the following?

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#Question id: 7757

#Unit 5. Developmental Biology

The TOR (target of rapamycin) kinase complex acts as a

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#Question id: 193

#Unit 1. Molecules and their Interaction Relevant to Biology

An ion commonly found in metalloenzymes and which can undergo reversible oxidation and reduction is