Which chemical is synthesized by some sponges and acts as an antibiotic

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#Question id: 360

#I Life Science/ Life Sciences Group – I-V

Which of the following is considered to be a strong base (alkali)?

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#Question id: 10507

#SCPH05 I Biotechnology

Rhizobacteria function as

 a) Nitrogen fixation

 b) depositing pathogens directly into the vascular system,

 c) producing antibiotics and antifungal agents for inhibiting soil pathogens

 d) herbivore sensors by sending electrical or chemical signals to surrounding cells

 Which one of the following combination is correct?

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#Question id: 296

#SCPH28 | Zoology

In a single molecule of water, two hydrogen atoms are bonded to a single oxygen atom by ________.

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#Question id: 5027

#SCPH28 | Zoology

Fossil evidence indicates that the following events occurred in what sequence, from earliest to most recent?

1. Protostomes invade terrestrial environments.

2. Cambrian explosion occurs.

3. Deuterostomes invade terrestrial environments.

4. Vertebrates become top predators in the seas.

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#Question id: 19367

#SCPH28 | Zoology

First phase genetic engineering is done for production of 

1. Human growth hormone

2. Insulin 

3. Interferon

Which of the above products are correct?