For a mineral nutrient to get to the leaves, it must make it to the plant xylem. Which layer would the
nutrient need to traverse in a dicot? What will be an ideal response?
The nutrient would enter the plant via the epidermis. Next, it would move through the cortex.
Following this it would cross the endodermis and pericycle. Finally it would enter the xylem.
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Which of the following is not one of the major transport systems of the inner mitochondrial membrane?
A) sodium-potassium pump B) dicarboxylate carriers C) tricarboxylate carriers D) pyruvate carrier cotransport E) ATP-ADP carrier exchange
Which is inncorrect concerning ulcers?
A. more than 90% are in the duodenum B. they may occur when excess acid damages tissue C. susceptibility is increased by an infection with helicobacter pylori. D. antibotics can cure an ulcer E. uclers can occur if bile fails to neutralize the acids chyme that enter the duodenum.
AZT and Valaciclovir are antiviral nucleoside analogs that interfere with
A. protein synthesis. B. cell wall synthesis. C. cell membrane component synthesis. D. nucleic acid synthesis. E. viral attachment.
All of the following are coliforms that cause opportunistic and nosocomial infections except
A. Enterobacter. B. Citrobacter. C. Shigella. D. Klebsiella. E. Serratia.