Lymphocytes react to:
Answer: Antigen bound to major histocompatibility complex proteins on the target cell
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Vascular tissues distribute water and solutes through ground tissue. In ____, water and ions flow through tubes of dead tracheids and vessel elements
a. sclerenchyma b. parenchyma tissue c. ground tissue d. xylem e. phloem
Four of these five choices are characteristics of sawfly caterpillars. Select the exception
a. vomit in self defense b. prey of birds c. selfish herd d. safety in numbers e. venomous
Which of the following is NOT true concerning the
root endodermis? a. It regulates the movement of water and minerals into the vascular cylinder. b. It contains a water-impermeable waxy strip. c. It is a layer of cells surrounding the vascular cylinder. d. It forces water to move through its Casparian strip. e. It separates the vascular cylinder from the cortex of a root.
Select the best response to the question. ? ?Which of the following is NOT a safe injection practice?
A) performing hand hygiene before and after administering an injection B) placing a used syringe on the patient's bedside table C) placing a used syringe immediately in a sharps container D) donning gloves prior to giving the injection