The enzyme fumarase catalyzes the reverse hydration of fumaric acid to l-malate, but it will not catalyze the hydration of maleic acid, the cis isomer of fumaric acid. This is an example of:

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#Question id: 10967

#7. System Physiology – Animal

A 21-year-old female, blood type B, is undergoing surgery. Her platelet count is 75,000/μl. She will need platelet infusions before and during surgery. Which of the following blood types would be used to collect platelets that are compatible with the patient?

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#Question id: 1288

#4. Cell Communication and Cell Signaling

Which extracellular matrix component is expressed in a cell-specific manner and binds to the tripeptide sequence Arg-Gly-Asp?

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#Question id: 3614

#8. Inheritance Biology

A gene showing codominance–

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#Question id: 12030

#7. System Physiology – Animal

A significant contribution of intestinal bacteria to human nutrition is the benefit of bacterial:

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#Question id: 10507

#6. System Physiology – Plant

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?